. 2010 Oct;51(10):2909–2921. doi: 10.1194/jlr.M006429

TABLE 1.

Main components of cellular fractions

	Pachythene Spermatocytes	Round Spermatids	Residual Bodies
		mg per 10⁹ cells or particles
Proteins	199 ± 22^a	110 ± 17^b	25 ± 4^c
Phospholipids	51 ± 3^a	21 ± 1^b	10 ± 0.5^c
Free cholesterol	4.2 ± 0.1^a	1.9 ± 0.1^b	1.2 ± 0.1^c
Cholesterol esters	0.15 ± 0.02^a	0.03 ± 0.01^b	0.02 ± 0.004^b
Ether-linked triglycerides	0.41 ± 0.03^a	0.08 ± 0.003^b	0.03 ± 0.004^c
Diacylglycerols	0.33 ± 0.02^a	0.20 ± 0.01^b	0.16 ± 0.01^b
Triacylglycerols	2.46 ± 0.24^a	1.25 ± 0.11^b	1.56 ± 0.08^c
TAG/PL (mg/mg)	0.05 ± 0.01^a	0.06 ± 0.01^a	0.16 ± 0.01^b
Chol/PL (mol/mol)	0.18 ± 0.01^a	0.20 ± 0.01^a	0.25 ± 0.002^b

The amounts of protein, phospholipids, free cholesterol, and other neutral lipids (mg) are compared among pachytene spermatocytes, round spermatids, and residual bodies. The content of cholesterol esters, triacylglycerols, diacylglycerols, and ether-linked triglycerides was estimated from their fatty acids. ANOVA and Tukey's multiple comparison test was used for statistical analysis. Chol, cholesterol (free); PL, phospholipid; TAG, triacylglycerol. Row values with different superscript letters (^a,b,c) point to significantly different values (P < 0.05).