Fig. 13. Oviductal epithelial cycle inDermophis mexicanus.
A: Nonpregnant oviduct; epithelium is thin and nonsecretory
(hematoxylin and eosin stain). B: Mid-pregnant oviduct; connective
tissue and epithelium are extended into deep folds, and
the epithelium is proliferated, hyperemic, and secretory (stained