Temin's Modified Eagle Medium (MEM), is a modified form of Minimum Essential Medium, one of the most commonly used of all cell culture media. MEM can be used with a variety of suspension and adherent mammalian cells, including HeLa, BHK-21, 293, HEP-2, HT-1080, MCF-7, fibroblasts, and primary rat astrocytes. We offer a variety of Gibco™ MEM modifications for a range of cell culture applications. Find the right formulation using the media selector tool.
The complete formulation is available.

MEM, developed by Harry Eagle, was based on his earlier formulation of Basal Medium Eagle (BME). Many other modifications of MEM followed, including Glasgow’s MEM, MEM α, DMEM, and Temin’s Modification. Temin’s Modification is a 2x MEM with 4x the vitamins and amino acids of the original MEM. This MEM formulation contains Earle’s salts for use in a CO₂ incubator. This product is made with Earle’s salts.

Product Intended Use
For in vitro diagnostic use. CAUTION: Not for human or animal therapeutic use. Uses other than the intended use may be a violation of local law.

cGMP Manufacturing
Gibco™ MEM is manufactured at a cGMP compliant facility located in Grand Island, New York. The facility is registered with the FDA as a medical device manufacturer and is certified to ISO 13485 standards.

MEM contains no proteins, lipids, or growth factors. Therefore, MEM requires supplementation, commonly with 10% Fetal Bovine Serum (FBS). MEM uses a sodium bicarbonate buffer system (8.4 g/L) and therefore requires a 5-10% CO₂ environment to maintain physiological pH.