Description_x000D_ Application_x000D_ RPMI 1640 Medium was developed at Roswell Park Memorial Institute in 1966 by Moore and his co-workers. A modification of McCoy′s 5A Medium, it was formulated to support lymphoblastoid cells in suspension culture, but it has since been shown to support a wide variety of cells that are anchorage dependent. Originally intended to be used with a serum supplement, RPMI 1640 has been shown to support several cell lines in the absence of serum. It has also been widely used in fusion protocols and in the growth of hybrid cells._x000D_ Other Notes_x000D_ This RPMI-1640 medium is supplemented with L-Ala-L-Gln dipeptide. This provides a more stable form of glutamine for cell culture. Free amino acid L-glutamine is known to be unstable in cell culture._x000D_ Legal Information_x000D_ AQmedia is a trademark of Sigma-Aldrich Co. LLC