Optimem

Medium contains insulin, transferrin, hypoxanthine, thymidine, and trace elements. CTS™ Opti-MEM™ I uses a sodium bicarbonate buffer system (2.4 g/L), and therefore requires a 5–10% CO 2 environment to maintain physiological pH. Formulation is identical to research grade Opti-MEM™ I Reduced Serum Medium. Xeno-free and contains human ...

Optimem. Invitrogen/GIBCO . SKU: 31985070: Unit of Measurement: BOTTLE: Lead Time: 10 Working Days: Reduced Serum Media (1X) liquid containing HEPES buffer, 2,400 mg/L sodium bicarbonate, hypoxanthine, thymidine, sodium pyruvate, L-glutamine, trace elements, growth factors, and phenol red reduced to 1.1 mg/L. Life Tech.Opti-MEM I Reduced-Serum Medium is an improved Minimal Essential Medium (MEM) that allows for a reduction of Fetal Bovine Serum supplementation by at least 50%. With HEPES buffer, 2,400 mg/L sodium bicarbonate, hypoxanthine, thymidine, sodium pyruvate, L-glutamine, trace elements, growth factors, anOpti-MEM™ I Reduced-Serum Medium is an improved Minimal Essential Medium (MEM) that allows for a reduction of Fetal Bovine Serum supplementation by at least 50% with …Optimem is a magical flash card app that helps you learn languages, information, and skills faster. Optimem is a magical learning app that uploads information into your brain at maximum speed.Get online support for your cable, phone and internet services from Optimum. Pay your bill, connect to WiFi, check your email and voicemail, see what's on TV and more!

Opti-MEM I Reduced-Serum Medium is an improved Minimal Essential Medium (MEM) that allows for a reduction of Fetal Bovine Serum supplementation by at least 50%. With HEPES buffer, 2,400 mg/L sodium bicarbonate, hypoxanthine, thymidine, sodium pyruvate, L-glutamine, trace elements, growth factors, an Opti-MEM is a serum-reduced media that contains insulin, transferrin, hypoxanthine, thymidine, and trace elements that compensate for the adverse impact of … Description. Opti-MEM™ I Reduced-Serum Medium is an improved Minimal Essential Medium (MEM) that allows for a reduction of Fetal Bovine Serum supplementation by at least 50% with no change in growth rate or morphology. Opti-MEM™ I medium is also recommended for use with cationic lipid transfection reagents, such as Lipofectamine™ reagent. Catalog number: 31985070. Opti-MEM™ I Reduced-Serum Medium is an improved Minimal Essential Medium (MEM) that allows for a reduction of Fetal Bovine Serum supplementation by at least 50% with no change in growth rate or morphology. Opti-MEM™ I medium is also recommended for use with cationic lipid transfection reagents, such as ...Opti-MEM I Reduced-Serum Medium is an improved Minimal Essential Medium (MEM) that allows for a reduction of Fetal Bovine Serum supplementation by at least 50%. With HEPES buffer, 2,400 mg/L sodium bicarbonate, hypoxanthine, thymidine, sodium pyruvate, L-glutamine, trace elements, growth factors, anAn Optimum ID is a unique username that provides access to extra services and benefits. To protect your most sensitive data, you may be asked to re-enter your password from time to time. Sign In with your Optimum ID to manage your account, check your email, set your DVR, and pay your cable bill online. Log in now! The formulation of CTS Opti-MEM I is identical to research-grade Opti-MEM I Reduced Serum Medium. CTS Opti-MEM I is xeno-free and contains human transferrin. CTS Opti-MEM I is manufactured in conformity with cGMP for medical devices, 21 CFR, Part 820, and certified to the ISO 13485. Drug Master File and Regulatory Support File available upon ...

Opti-MEM® Reduced Serum Medium ∤ Eppendorf tubes Timing Preparation: 10 minutes Incubation: 5 minutes Final Incubation: 1-3 days Selection Guide Lipofectamine® Reagents Go online to view related products. Product Description ∤ Lipofectamine® RNAiMAX Transfection Reagent is a proprietary formulation for transfecting small RNAs (e.g.,These components are mixed at a ratio of 1.5 μg total plasmid to 100 μl OPTI-MEM, 2 μl XtremeGENE HP for 30 min and then added into 1 ml DMEM with 500 μM ONBY. Subsequently, the cell culture ...Opti-MEM™ I Reduced-Serum Medium is a unique medium that contains insulin, transferrin, hypoxanthine, thymidine, and trace elements. These additional components allow for a reduction in serum supplementation by at least 50%. Opti-MEM™ I medium uses a sodium bicarbonate buffer system (2.4 g/L), and therefore requires a 5–10% CO 2 ...Mix Lipofectamine 2000 gently before use, then dilute the appropriate amount in 50 μl of Opti-MEM I Medium. Incubate for 5 minutes at room temperature. Note: Proceed to Step c within 25 minutes. c. After the 5 minute incubation, combine the diluted DNA with diluted Lipofectamine 2000 (total volume = 100 μl).

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Compared with Opti-MEM-formula mRNA transfection, the transfection effect of clinical injection is slightly poor. However, it provides an optimization strategy to improve the formulation of mRNA LNP with weak immunogenicity. Lyophilization is an effective method for preserving non-viral mRNA vaccines.Hello, I am growing HaCaT cell in low Ca DMEM (0.03mm) then switch to high Ca DMEM (2.8mM) to induce differentiation. I need to do a RNAi knockdown where I use Opti-MEM™ I Reduced Serum Medium ...OPTI-MEM I is a modification of Eagle's Minimal Essential Medium, buffered with HEPES and sodium bicarbonate, and supplemented with hypoxanthine, thymidine, sodium pyruvate, L-glutamine μg/mL), or GLUTAMAX, trace elements and growth factors. The protein level is minimal (15 with insulin and transferrin being the only protein supplements.Opti-MEM™ I Reduced-Serum Medium is an improved Minimal Essential Medium (MEM) that allows for a reduction of Fetal Bovine Serum supplementation by at least 50% with no change in growth rate or morphology. Brand: Gibco™ 31985062. 7.98 GBP valid until 2024-04-30. Use promo code "21741" to get your promotional price. Code : 50.Check the cells 1-2 days after transfection to determine what ratio gives the highest percentage of GFP positive cells. Gently add the diluted PEI to the diluted DNA. Add the diluted PEI dropwise while gently flicking the diluted DNA tube. Incubate the mixture 15-20 min at room temperature. Opti-MEM™ I Reduced-Serum Medium is a unique medium that contains insulin, transferrin, hypoxanthine, thymidine, and trace elements. These additional components allow for a reduction in serum supplementation by at least 50%. Opti-MEM™ I medium uses a sodium bicarbonate buffer system (2.4 g/L), and therefore requires a 5–10% CO 2 ...

Optimem is additional enhancements to the existing daisy chain topology to maximise signal integrity. It will aid in running more dense memory configurations, however more modules will always have concessions over less. 13900KS / 8000 CAS36 / ROG APEX Z790 / ROG TUF RTX 4090. 0 Kudos.Herein, we demonstrate the development of a flow-cytometric assay to determine transfection efficiency by labeling a reporter plasmid with Label IT ® Tracker TM ( Homann et al., 2017 ) ( Figure 1 ). This method does not depend on co-transfection of two different plasmids and simultaneously quantifies cell death, uptake of the labeled plasmid ... Description. Opti-MEM™ I Reduced-Serum Medium is an improved Minimal Essential Medium (MEM) that allows for a reduction of Fetal Bovine Serum supplementation by at least 50% with no change in growth rate or morphology. Opti-MEM™ I medium is also recommended for use with cationic lipid transfection reagents, such as Lipofectamine™ reagent. overgrowth. For each transfection sample, prepare oligomer-Lipofectamine 2000 complexes as follows: A. Dilute 20 pmol Stealth RNAi or siRNA oligomer in 50 µl Gibco™ Opti-MEM™ I Reduced Serum Medium without serum (resulting concentration of RNA in Opti-MEM is 400 nM). Mix gently. B. Mix Lipofectamine 2000 gently before use, then dilute 1 ...OpenAM - Optimum WebMail ... Loading...Hello, I am growing HaCaT cell in low Ca DMEM (0.03mm) then switch to high Ca DMEM (2.8mM) to induce differentiation. I need to do a RNAi knockdown where I use Opti-MEM™ I Reduced Serum Medium ...Optimem is a magical flash card app that helps you learn languages, information, and skills faster. Optimem is a magical learning app that uploads information into your brain at maximum speed. Amitabh Debnath Optimem is a reduced serum medium, you will use it to prepare the transfection reagent & nucleic acid mixture and then add it to cells in serum-free media and incubate. Prefer ... Opti-MEM Is the Most Suitable Culture Medium for the HEPES Method. Opti-MEM is commonly used to preserve cell life under reduced-serum conditions during DNA transfection. In addition to evaluating the ability of Opti-MEM (containing 20 mM HEPES), we investigated the abilities of α-MEM (containing no HEPES), DMEM-F12 (containing …Description. Opti-MEM™ Reduced-Serum Medium is an improved Minimal Essential Medium (MEM) that allows for a reduction of Fetal Bovine Serum supplementation by at least 50% with no change to growth rate or morphology. Opti-MEM™ is also recommended for use with cationic lipid transfection reagents, such as Lipofectamine™ reagent.

Opti-MEM I Reduced-Serum Medium is an improved Minimal Essential Medium (MEM) that allows for a reduction of Fetal Bovine Serum supplementation by at least 50% with no …

Opti-MEM™ I Reduced-Serum Medium is an improved Minimal Essential Medium (MEM) that allows for a reduction of Fetal Bovine Serum supplementation by at least 50% with …Both pre-spun and OptiMEM were further supplemented with P/S. Conditioned media (pre-spun and OptiMEM) was collected for EV isolation from 5 individual flasks representing 5 different incubation time points (24, 48, 72, 96 and 120 h) after changing the media. A parallel experiment was also conducted on SH-SY5Y cells, a … Catalog number: 51985042. Opti-MEM™ Reduced-Serum Medium is an improved Minimal Essential Medium (MEM) that allows for a reduction of Fetal Bovine Serum supplementation by at least 50% with no change to growth rate or morphology. Opti-MEM™ is also recommended for use with cationic lipid transfection reagents, such as Lipofectamine™ reagent. Optimem is a magical flash card app that helps you learn languages, information, and skills faster. Optimem is a magical learning app that uploads information into your brain at maximum speed.Opti-MEM® Reduced Serum Medium ∤ Eppendorf tubes Timing Preparation: 10 minutes Incubation: 5 minutes Final Incubation: 1-3 days Selection Guide Lipofectamine® Reagents Go online to view related products. Product Description ∤ Lipofectamine® RNAiMAX Transfection Reagent is a proprietary formulation for transfecting small RNAs (e.g.,Opti-MEM™ I Reduced-Serum Medium is a unique medium that contains insulin, transferrin, hypoxanthine, thymidine, and trace elements. These additional components allow for a reduction in serum supplementation by at least 50%. Opti-MEM™ I medium uses a sodium bicarbonate buffer system (2.4 g/L), and therefore requires a 5–10% CO 2 ...By using a pipette, add 4 μl of Lipofectamine 2000 into 50 μl of Opti-MEM I. 3 Add 1 μg of Qiagen miniprep–purified DNA into 50 μl of Opti-MEM I in a separate 1.5-ml centrifuge tube.

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After dilution in (a) OptiMEM, (b) serum-free DMEM or (c) complete DMEM, polyplexes were added to cells and transfection efficiency was evaluated at 24 hrs. Results are expressed as mean ± SD, n ...Opti-MEM I Reduced-Serum Medium is an improved Minimal Essential Medium (MEM) that allows for a reduction of Fetal Bovine Serum supplementation by at least 50%. With HEPES buffer, 2,400 mg/L sodium bicarbonate, hypoxanthine, thymidine, sodium pyruvate, L-glutamine, trace elements, growth factors, an Opti-MEM I Reduced-Serum Medium is an improved Minimal Essential Medium (MEM) that allows for a reduction of Fetal Bovine Serum supplementation by at least 50%. With HEPES buffer, 2,400 mg/L sodium bicarbonate, hypoxanthine, thymidine, sodium pyruvate, L-glutamine, trace elements, growth factors, an Gibco™ Opti-MEM™ is a unique media that contains insulin, transferrin, hypoxanthine, thymidine, and trace elements. These additional components allow for a reduction in serum supplementation by at least 50%. Gibco™ Opti-MEM™ with GlutaMAX ™ supplement minimizes toxic ammonia build-up and improves cell viability and growth in an easy ... An Optimum ID is a unique username that provides access to extra services and benefits. To protect your most sensitive data, you may be asked to re-enter your password from time to time. Sign In with your Optimum ID to manage your account, check your email, set your DVR, and pay your cable bill online. Log in now! Catalog number: 31985088. Opti-MEM™ I Reduced-Serum Medium is an improved Minimal Essential Medium (MEM) that allows for a reduction of Fetal Bovine Serum supplementation by at least 50% with no change in growth rate or morphology. Opti-MEM™ I medium is also recommended for use with cationic lipid transfection reagents, such as ...By using a pipette, add 4 μl of Lipofectamine 2000 into 50 μl of Opti-MEM I. 3 Add 1 μg of Qiagen miniprep–purified DNA into 50 μl of Opti-MEM I in a separate 1.5-ml centrifuge tube.Description. Opti-MEM™ I Reduced-Serum Medium is an improved Minimal Essential Medium (MEM) that allows for a reduction of Fetal Bovine Serum supplementation by at least 50% with no change in cell growth rate or morphology. Opti-MEM™ I medium is also recommended for use with cationic lipid transfection reagents, such as Lipofectamine ...Opti-MEM I Reduced-Serum Medium is an improved Minimal Essential Medium (MEM) that allows for a reduction of Fetal Bovine Serum supplementation by at least 50%. With HEPES buffer, 2,400 mg/L sodium bicarbonate, hypoxanthine, thymidine, sodium pyruvate, L-glutamine, trace elements, growth factors, an An Optimum ID is a unique username that provides access to extra services and benefits. To protect your most sensitive data, you may be asked to re-enter your password from time to time. Sign In with your Optimum ID to manage your account, check your email, set your DVR, and pay your cable bill online. Log in now! ….

Opti-MEM I Reduced-Serum Medium is an improved Minimal Essential Medium (MEM) that allows for a reduction of Fetal Bovine Serum supplementation by at least 50%. With HEPES buffer, 2,400 mg/L sodium bicarbonate, hypoxanthine, thymidine, sodium pyruvate, L-glutamine, trace elements, growth factors, an Motherboard tracing layout they all have a naming scheme, it doesn't matter, it's either T-top or daisy-chain motherboard makers have probably optimized memory routing for a long time now. 3. 1.8M subscribers in the Amd community. Welcome to /r/AMD — the subreddit for all things AMD; come talk about Ryzen, Radeon, Zen4, RDNA3, EPYC….Catalog number: 31985062. Opti-MEM™ I Reduced-Serum Medium is an improved Minimal Essential Medium (MEM) that allows for a reduction of Fetal Bovine Serum supplementation by at least 50% with no change in growth rate or morphology. Opti-MEM™ I medium is also recommended for use with cationic lipid transfection reagents, such as ...We would like to show you a description here but the site won’t allow us.Enter your address to see availability in your area. Smart WiFi 6 claim based on comparison of maximum theoretical speeds for Optimum’s Smart WiFi 6 (802.11ax) and Smart WiFi 5 (802.11ac) gateways. Optimum offers high …Both pre-spun and OptiMEM were further supplemented with P/S. Conditioned media (pre-spun and OptiMEM) was collected for EV isolation from 5 individual flasks representing 5 different incubation time points (24, 48, 72, 96 and 120 h) after changing the media. A parallel experiment was also conducted on SH-SY5Y cells, a …Opti-MEM I Reduced-Serum Medium is an improved Minimal Essential Medium (MEM) that allows for a reduction of Fetal Bovine Serum supplementation by at least 50% with no … Opti-MEM I Reduced-Serum Medium is an improved Minimal Essential Medium (MEM) that allows for a reduction of Fetal Bovine Serum supplementation by at least 50%. With HEPES buffer, 2,400 mg/L sodium bicarbonate, hypoxanthine, thymidine, sodium pyruvate, trace elements, and growth factors. Optimem, A DNA solution was made up by mixing 8 µg plasmids of lentiviral sgRNA library , 4 µg psPAX2, 4 µg pMD2.G, and Opti-MEM medium to a total volume of 250 μl. For a polyethyenimine (PEI): DNA ratio of 3:1, 48 µl of PEI solution (1 µg/µl; Polysciences, Hirschberg, Germany) were added to 202 µl Opti-MEM., Handle in accordance with established bio-safety practices. Cat. No.: 22600. 10 X 1 L. 10 L. Storage Condition: 2 to 8°C, dark and dry. Shelf Life: See product label for expiration date. OPTI-MEM I is a versatile, chemically-defined medium, formulated to reduce significantly the amount of serum required for cultivating mammalian cells in vitro., Opti-MEM™ I Reduced-Serum Medium is an improved Minimal Essential Medium (MEM) that allows for a reduction of Fetal Bovine Serum supplementation by at least 50% with …, Apr 30, 2024 · Opti-MEM I Reduced-Serum Medium is an improved Minimal Essential Medium (MEM) that allows for a reduction of Fetal Bovine Serum supplementation by at least 50%. With HEPES buffer, 2,400 mg/L sodium bicarbonate, hypoxanthine, thymidine, sodium pyruvate, L-glutamine, trace elements, growth factors, an , Opti-MEM™ I Reduced-Serum Medium is an improved Minimal Essential Medium (MEM) that allows for a reduction of Fetal Bovine Serum supplementation by at least 50% with no change in cell growth rate or morphology. Brand: …, Opti-MEM Reduced-Serum Medium is an improved Minimal Essential Medium (MEM) that allows for a reduction of Fetal Bovine Serum supplementation by at least 50%. With HEPES buffer, hypoxanthine, thymidine, sodium pyruvate, L-glutamine, trace elements, growth factors, and phenol red. , Description. Opti-MEM™ I Reduced-Serum Medium is an improved Minimal Essential Medium (MEM) that allows for a reduction of Fetal Bovine Serum supplementation by at least 50% with no change in growth rate or morphology. Opti-MEM™ I medium is also recommended for use with cationic lipid transfection reagents, such as Lipofectamine™ reagent. , Jun 6, 2019 · To determine whether the sole addition of HEPES into Opti-MEM could promote protein transfection, proteins that had not been preincubated with 20 mM HEPES were added to cells that had been cultured in Opti-MEM with an additional 1.3 mM HEPES, which produced the same final HEPES concentration in the culture medium as in the HEPES-incubating ... , Both pre-spun and OptiMEM were further supplemented with P/S. Conditioned media (pre-spun and OptiMEM) was collected for EV isolation from 5 individual flasks representing 5 different incubation time points (24, 48, 72, 96 and 120 h) after changing the media. A parallel experiment was also conducted on SH-SY5Y cells, a …, Opti-MEM Reduced-Serum Medium is an improved Minimal Essential Medium (MEM) that allows for a reduction of Fetal Bovine Serum supplementation by at least 50%. With GlutaMAX I, 2400 mg/L Sodium Bicarbonate, HEPES, Sodium Pyruvate, Hypoxanthine, Thymidine, Trace Elements, Growth Factors, 1.1 mg/L Phen , Aug 7, 2020 · Cell electrotransfection and viability rates using Bio-Rad buffer, OptiMEM-GlutaMAX, and PBS. Electrotransfection efficiency of mouse iPS (a and b) and MEF cells (c and d).In each electroporation ... , 500 mL Gibco™ Opti-MEM™ I Reduced Serum Medium, GlutaMAX™ Supplement with 1 mM Gibco™ Sodium Pyruvate and 5% Gibco FBS. To prepare lentivirus packaging medium, aseptically mix the following components: 474 mL of Opti-MEM I Reduced Serum Medium, GlutaMAX Supplement; 25 mL Fetal Bovine Serum, certified, US origin; 1 mL …, Opti-MEM™ I Reduced-Serum Medium ist ein verbessertes Minimal Essential Medium (MEM), das eine Reduktion der Supplementation von fötalem Rinderserum um mindestens 50 % ohne Änderungen der Wachstumsrate oder Morphologie ermöglicht. Opti-MEM™ I Medium wird auch zur Verwendung mit Reagenzien für die Transfektion kationischer …, Catalog number: 31985070. Opti-MEM™ I Reduced-Serum Medium is an improved Minimal Essential Medium (MEM) that allows for a reduction of Fetal Bovine Serum supplementation by at least 50% with no change in growth rate or morphology. Opti-MEM™ I medium is also recommended for use with cationic lipid transfection reagents, such as ..., Description. Opti-MEM Reduced-Serum Medium is an improved Minimal Essential Medium (MEM) that allows for a reduction of Fetal Bovine Serum supplementation by at least 50% with no change in growth rate or morphology. Opti-MEM I medium is also recommended for use with cationic lipid transfection reagents, such as Lipofectamine™ reagent. , Description. Opti-MEM™ I Reduced-Serum Medium is an improved Minimal Essential Medium (MEM) that allows for a reduction of Fetal Bovine Serum supplementation by at least 50% with no change in growth rate or morphology. Opti-MEM™ I medium is also recommended for use with cationic lipid transfection reagents, such as Lipofectamine™ …, Opti-MEM™ I 培养基是一种含有胰岛素、转铁蛋白、次黄嘌呤、胸苷和微量元素的独特培养基。. 这些附加组分可使血清添加量减少至少 50%。. Opti-MEM™ I 使用碳酸氢钠缓冲系统 (2.4 g/L)，因此需要 5–10% CO 2 环境来维持生理 pH 值。. 为确保供应链的稳定，同时在位 …, Aldrich® Market Select, your comprehensive solution for the identification and procurement of readily available screening compounds and building blocks. Compare. Clear All. Find optimem and related products for scientific research at MilliporeSigma., Opti-MEM I Reduced-Serum Medium is an improved Minimal Essential Medium (MEM) that allows for a reduction of Fetal Bovine Serum supplementation by at least 50%. With …, Save time, unlock product insights with our new AI bot. Try it today! Opti-MEM I Reduced-Serum Medium is an improved Minimal Essential Medium (MEM) that allows for a …, Opti‐MEM is a serum‐reduced media that contains insulin, transferrin, hypoxanthine, thymidine, and trace elements that compensate for the adverse impact of FBS supplementation reduction with ... , Opti-MEM is a modified version of MEM that is further supplemented with additional nutrients, growth factors, and supplements. It is a reduced-serum medium designed to enhance cell viability and ..., Before complexation, DNA was diluted with (50) μl of Optimem, Lipofectamine with (48) μl of Optimem and DOTAP/DOPC liposomes with (45) μl of Optimem. Complexes were left for 20 min at room ..., Handle in accordance with established bio-safety practices. Cat. No.: 22600. 10 X 1 L. 10 L. Storage Condition: 2 to 8°C, dark and dry. Shelf Life: See product label for expiration date. OPTI-MEM I is a versatile, chemically-defined medium, formulated to reduce significantly the amount of serum required for cultivating mammalian cells in vitro., Herein, we demonstrate the development of a flow-cytometric assay to determine transfection efficiency by labeling a reporter plasmid with Label IT ® Tracker TM ( Homann et al., 2017 ) ( Figure 1 ). This method does not depend on co-transfection of two different plasmids and simultaneously quantifies cell death, uptake of the labeled plasmid ..., Opti-MEM™ I is a minimal essential medium that reduces serum supplementation by 50% for mammalian cell culture and transfection. It contains insulin, transferrin, hypoxanthine, …, While N2a neuroblastoma cells cultured in serum-free (OptiMEM) conditions did not result in EVs with significant biophysical or size differences compared with cells cultured in serum-containing (pre-spun) conditions, the quantity of isolated EVs was greatly increased. Moreover, the expression levels of certain vesicular proteins (e.g. small ..., Mar 5, 2024 · Optimem is additional enhancements to the existing daisy chain topology to maximise signal integrity. It will aid in running more dense memory configurations, however more modules will always have concessions over less. 13900KS / 8000 CAS36 / ROG APEX Z790 / ROG TUF RTX 4090. 0 Kudos. , Tube 1: Mix 3 μg of pMRX_IRES-puro_GFP-Gal3 and 3 μg of pVSVG in 250 μL of OPTI-MEM. ii. Tube 2: Add 16 μL of PEI to 250 μL of OPTI-MEM and mix well. iii. Mix tube-1 and tube-2 and incubate for 15 min at 20°C–25°C. iv. Drop 500 μL of the mixture into 2.5 mL fresh culture medium. v., Hello, I am growing HaCaT cell in low Ca DMEM (0.03mm) then switch to high Ca DMEM (2.8mM) to induce differentiation. I need to do a RNAi knockdown where I use Opti-MEM™ I Reduced Serum Medium ..., Opti-MEM™ I Reduced-Serum Medium is an improved Minimal Essential Medium (MEM) that allows for a reduction of Fetal Bovine Serum supplementation by at least 50% with no change in cell growth rate or morphology. Opti-MEM™ I medium is also recommended for use with cationic lipid transfection reagents, such as Lipofectamine™ reagent., Description. Opti-MEM™ I Reduced-Serum Medium is an improved Minimal Essential Medium (MEM) that allows for a reduction of Fetal Bovine Serum supplementation by at least 50% with no change in growth rate or morphology. Opti-MEM™ I medium is also recommended for use with cationic lipid transfection reagents, such as Lipofectamine™ …, By using a pipette, add 4 μl of Lipofectamine 2000 into 50 μl of Opti-MEM I. 3 Add 1 μg of Qiagen miniprep–purified DNA into 50 μl of Opti-MEM I in a separate 1.5-ml centrifuge tube.