MEM Alpha was developed in 1971 and differs from standard MEM by containing the following unique components:  vitamin B12, ascorbic acid, non-essential amino acids, sodium pyruvate, lipoic acid, and D-biotin.
This media has been used to culture bone marrow cells and amniotic cells for chromosome analysis.

MEM Alpha is available as:
12-169 - without L-glutamine, deoxyribonucleosides or ribonucleosides
BE02-002 - with Ultraglutamine, deoxyribonucleosides and ribonucleosides