Fig. 1From: Full-length transcriptome sequencing and comparative transcriptomic analysis to uncover genes involved in early gametogenesis in the gonads of Amur sturgeon (Acipenser schrenckii)Histological characteristics of ovary (a and b) and testes (c and d) from 3-year-old A. schrenckii individuals. OI, ovarian lamellae; OL, ovarian lumen; PG, primary growth oocyte; BM, basement membrane; N, oocyte nucleus; Nu, oocyte nucleoli; OG, oogonia; BV, blood vessels; Lo, lobule; SG, spermatogonia; SC, Sertoli cell; The gonadal tissues were stained with hematoxylin and eosin (HE staining). Scale bar in A = 100 μm and in B, C, D = 50 μmBack to article page