Figure 2
From: Androgen-related sperm storage in oviduct of Chinese Soft-Shelled Turtle in vivo during annual cycle

TEM showing the isthmus of the oviduct in P. sinensis in January.
(A) The mucosal epithelium of the oviduct comprises ciliated and secretory cells. (B) Many spermatozoa were embedded among the cilia. Secretory cell (SC), ciliated cell (CC), gland cell (GC), cilia (Ci), spermatozoa (Sp). Scale bar = 10 μm (A) and 2 μm (B).