ADJ (of monotremes and marsupials) having no placenta (单孔类动物和有袋动物)无胎盘的
But the syncytin genes we use today may have actually replaced an ancestral one that a virus bequeathed to the very first placental mammals.
但我们今天使用的合胞体蛋白基因可能实际上已取代了最初病毒传给第一个胎生哺乳动物的基因。
Robin van Persie, the young Arsenal footballer, is apparently off to Serbia to consult a doctor who, for an undisclosed sum of money, is going to treat his injured leg with "placental fluid".
据说年轻的阿森纳球员范佩西将前往塞尔维亚求医，医生将使用“胎液”为他治疗脚伤，治疗费用还不得而知。
Background Oxidative stress has been proposed as a mechanism linking the poor placental perfusion characteristic of preeclampsia with the clinical manifestations of the disorder.
背景胎盘灌注差是先兆子痫的特征，有人提出氧化应激是将胎盘灌注差与该病的临床表现相联系的一种机制。
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