Table 1.

Microinsemination with germ cells that developed after transplantation of fresh rat testis cells

Type of cells injected	No. of oocytes injected	Survival after 24 h (%)	Cleaved (%)	No. of embryos transferred (%)	No. of embryos implanted (%)	No. of pups (%)	EGFP fluorescence
Round spermatid	141	97 (69)	37 (26)	92 (65)	10 (7)	2 (1)	2
Elongated spermatid	16	8 (50)	0 (0)	8 (50)	5 (31)	0 (0)	0
Total	157	105 (67)	37 (24)	100 (64)	15 (10)	2 (1)	2

Shown are the results of two separate experiments. Embryos were cultured for 24 h before embryo transfer.