yolk n.蛋黄,卵黄卵黄,羊毛脂...yolk agar 卵黄琼脂...yolk bag 卵黄囊...yolk blastopore 卵黄胚孔...yolk cavity 卵黄腔...yolk cells 卵黄细胞...yolk cells cleavage 卵黄分裂...yolk endoderm 卵黄内胚层...yolk epithelium 卵黄上皮...yolk granules 卵黄粒...yolk membranes 卵黄膜...yolk nuclei 卵黄核,巴比阿尼氏核...yolk of wool 羊毛脂...yolk plug 卵黄栓...yolk sac 卵黄囊卵黄囊...yolk sac antigcns 卵黄囊抗原...yolk skin 卵黄膜...yolk stalk 卵黄蒂...yolk-sac endoderm 卵黄囊内胚层...yolk-sac entoderm 卵黄囊内胚层...yolk-sac placenta 卵黄囊胎盘,绒[毛]膜卵黄囊胎...
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