MEM Alpha Modification is an alteration of MEM (Minimum Essential Medium). MEM was originally developed by Harry Eagle and from there modified in several ways (including the alpha modification) to suit many cell culture applications. It is used for cultivation of numerous suspension and adherent cells, including HeLa, BHK-21, HEK 293, HEP-2, HT-1080, MCF-7, fibroblasts, and primary rat astrocytes. This Alpha MEM modification comes without L-Glutamine and is supplemented with Nucleosides.