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母猫产下罕见双头猫,小猫出生后不停啼哭仅3天就死亡!这就是反对 ...
科学家认为,双头猫生来就有两张脸,是因为胎儿时期产生了过量的「蛋白质音猬因子」(Sonic Hedgehog),这种蛋白质在胚胎发育阶段对颅骨和面部的形成起作用。这种疾病也被称为双面症,会导致猫的部分或全部面部在头部复制。
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