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Fig. 4 | Frontiers in Zoology

Fig. 4

From: Reproductive axis gene regulation during photostimulation and photorefractoriness in Yangzhou goose ganders

Fig. 4

Histological analysis of sections from Yangzhou goose gander testis. Sections from Yangzhou goose gander were collected on days 67, 131, 250, and 313 and were stained with hematoxylin and eosin Black arrowhead: spermatogonia; black arrow: primary spermatocyte; black arrow with tail: elongated spermatid; star: Sertoli cell vacuolation. Scale bar represents 100 μm in 10 × and 20 μm in 40 × 

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