Table 1:

Percentages of various spermatogenic cell types and Sertoli cells in neonatal and prepubertal mice (adapted from Bellve et al. [72])

Cell type	Postnatal day
	6d	8d	10d	12d	14d	16d	18d	20d
Early differentiated spermatogonia	16	-	-	-	-	-	-	-
Differentiated spermatogonia	-	27	18	15	12	17	10	10
Preleptotene spermatocyes	-	-	15	11	9	5	10	7
Leptotene spermatocytes	-	-	15	12	13	5	5	9
Zygotene spermatocytes	-	-	-	23	14	7	8	8
Pachytene spermatocytes	-	-	-	-	15	27	36	33
Secondary spermatocytes	-	-	-	-	-	-	1	1
Round spermatids	-	-	-	-	-	-	1	4
Sertoli cells	84	73	52	39	37	39	29	28