PCNA expression was assessed in organotypic culture at days 0, 7, 9 and 11 on at least 500 intra-tubular cells under the different culture conditions tested. The results are represented as the mean ± SEM with n=6.
(A) Percentage of total PCNA-positive cells.
(B) Percentage of PCNA-positive Sertoli cells.
(C) Percentage of PCNA-positive germ cells.
FootnotesT: basal culture medium without retinoid; RARE: 3.3.10-7M RA and 3.3.10-7M RE; RARE6: 3.3.10-7M RA and 10-6M RE; RARE5: 3.3.10-7M RA and 10-5M RE; RERA6: 3.3.10-7M RE and 10-6M RA; RERA5: 3.3.10-7M RE and 10-5M RA; RA6: 10-6M RA; RE6: 10-6M RE; RE5: 10-5M RE; RE4: 10-4M RE; In
vivo: In vivo control.
RA: Retinoic acid; RE: Retinol; D0: Day 0; D7: Day 7; D9: Day 9; D11: Day 11