Figure 1
From: Androgen-related sperm storage in oviduct of Chinese Soft-Shelled Turtle in vivo during annual cycle
Distribution of spermatozoa in the oviduct of P. sinensis during the hibernation season (from November to the next April), H&E staining.
(A) Vagina in November. (B) Uterus in November. (C) Isthmus in November. (D) In January, spermatozoa were embedded among the cilia in the isthmus. (E) In April, spermatozoa were embedded among the cilia in the isthmus. Cilia (Ci), epithelium (*), gland (G), gland conduit (GC), lumen (L), spermatozoa (Sp). Scale bar = 20 μm (A–C) and 10 μm (D,E).
