Serum-free, defined medium for the growth and differentiation of murine erythroleukemia cells.

Murine erythroleukemia (MEL) cells are frequently employed to study both cell growth and erythroid differentiation. Although these cells are easily cultured and induced to differentiate, they are routinely maintained in a medium that contains 10%-15% fetal bovine serum. Because of the variability between different lots and the cost of serum, it was desirable to define a serum-free medium in which to culture MEL cells. In the present work, a totally serum-free, defined medium is described that supports both normal cell growth and dimethyl sulfoxide induced differentiation in the two MEL cell lines examined (DS-19 and 270). A variety of hormones and biological compounds are examined in this medium to determine their effects on growth and differentiation. This medium does not support the growth of the mouse hepatoma cell line.