卵泡发生波
卵泡发生波也称为卵泡波。即雌性动物在一个发情周期中,卵巢上有群体卵泡发育到三级卵泡及少数卵泡发育到成熟卵泡大小时,发生闭琐退化或排卵的现象。
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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