母马发情宫颈
Visual examination of the cervix during estrus reveals it to be moist, hyperemic, and relaxed, which reflects the lack of progesterone and the presence of estrogen.
Courtesy of Dr. Patricia Sertich.
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Visual examination of the cervix during estrus reveals it to be moist, hyperemic, and relaxed, which reflects the lack of progesterone and the presence of estrogen.
Courtesy of Dr. Patricia Sertich.
