Oh Y K, Mori T, Uchida T A
J Reprod Fertil. 1983 Jul;68(2):365-9. doi: 10.1530/jrf.0.0680365.
The vaginal plug of the Japanese greater horseshoe bat is composed of an outer, thick, hard and homogeneous layer originating from the stratum disjunctum of the vaginal mucosa and a thin, soft and opaque central core containing accidentally trapped dead spermatozoa. The vaginal plug appeared to be expelled just before or after ovulation in spring. Immediately after copulation in autumn, uterine spermatozoa were dead but few leucocytes were present. As time passes after copulation, however, the infiltration of leucocytes into the uterus increased gradually, and extensive leucocytic phagocytosis of dead spermatozoa occurred during hibernation.
日本大马蹄蝠的阴道栓由外层厚、硬且均匀的部分组成，该部分源自阴道黏膜的离解层，还有一个薄、软且不透明的中央核心，其中偶然包含被困的死亡精子。阴道栓似乎在春季排卵前或排卵后排出。秋季交配后，子宫内的精子立即死亡，但白细胞数量很少。然而，随着交配后时间的推移，白细胞向子宫的浸润逐渐增加，并且在冬眠期间发生了对死亡精子的广泛白细胞吞噬作用。
