Fig. 4.

Main fatty acids of the total GPLs present in membrane fractions from differentiating spermatogenic cells. Light, heavy, and extra-heavy membrane fractions from the spermatogenic cells under study are compared. The panels on the right show the 22:5n-6/20:4n-6 ratio in the total GPLs of each membrane fraction. Cell differentiation caused little change in the fatty acid composition of the light fraction, while it entailed a notable increase in the proportion of 22:5n-6 in the heavy fraction. Values with different letters (a–c) represent significant differences (P < 0.05).