Fig. 3
From: Histological and transcriptomic effects of 17α-methyltestosterone on zebrafish gonad development
Histological analysis of gonads of 60 dpf untreated control (a - f) and MT-treated juvenile zebrafish (g). a Presumptive testis comprising infiltration of stromal (Str) cells and spermatogenic tubule-like structures (→). b Immature testis containing spermatogonia (Sg), spermatocytes (Sc) and spermatids (St). c Mature testis containing spermatogonia (Sg), spermatocytes (Sc), spermatids (St) and spermatozoa (Sz). d Ovary with Stage IA (IA) and Stage IB (IB) oocytes. e Ovary with Stage I IA (IA), Stage IB (IB) and Stage II (II) oocytes. f Ovary with Stage I IA (IA), Stage IB (IB) and Stage II (II) oocytes. g Mature testis possessing spermatogonia (Sg), spermatocytes (Sc), spermatids (St) and spermatozoa (Sz). Bar = 100 μm