Fig. 1.
GC-MS profile of nonsaponifiable lipid extract from NS0 cells grown in the presence of cholesterol: A, cholesterol; B, cholesta-4-en-3-one; C, 4-methylcholesta-8,24-dien-3-one; D, 4-methylcholesta-7,24-dien-3-one; E, 4-methylcholesta-dien-3-one + m/z 398; F, lanosterol + 4,4-dimethylzymosterol; G, lanosta-trien-3-one. NS0 cells accumulate 3-ketosteroid compounds and not oxidosqualenes.