Fig. 1

Histological observations and the counting the number of germ cells located in single seminiferous tubules of the Jilin white goose testicular tissue morphology at different stages of laying cycle. (A) HE staining of the testis (The first line: Observations of the Jilin white goose testicular tissue morphology at different stages of laying cycle under 100 times magnification, bar = 100 μm; The second line: Observations of the Jilin white goose testicular tissue morphology at different stages of laying cycle under 200 times magnification, bar = 50 μm; The third line: Observations of the Jilin white goose testicular tissue morphology at different stages of laying cycle under 400 times magnification, bar = 20 μm);red triangle refers to primary spermatocytes; orange triangle refers to sperm cells refers to yellow triangle: sperm). (B) the measurement of the number of germ cells located in single seminiferous tubules. Different letters represent significant different