30 日龄胚胎超声视频
At 30 days of gestation, the dorsal yolk sac is equal in size to the developing allantoic cavity. A heartbeat should be evident in the embryo proper after 25 days of gestation.
Courtesy of Dr. Patricia Sertich.
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At 30 days of gestation, the dorsal yolk sac is equal in size to the developing allantoic cavity. A heartbeat should be evident in the embryo proper after 25 days of gestation.
Courtesy of Dr. Patricia Sertich.
