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胚泡
释义
胚泡
Encyclopedia
医学
胚胎发生
释
blastocyst
胚泡
受精后第4天左右,卵裂球增至约100个的囊泡状胚。卵裂细胞的分泌,使细胞团之间出现裂隙,后融合扩大形成中央的腔,周围由扁平的滋养层细胞包绕,腔的一端有一团内细胞群细胞。
Biology
blastocyst
胚泡
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subtractive spectrum
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subtropical arid-semiarid climate
subtropical countercurrent
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Subtropical Deciduous Broadleaf Forest
sub-tropical forest
subtropical high
subtropical humid climate
subtropical jet stream
Subtropical Mixed Evergreen and Deciduous Broadleaf Forest
subtropical monsoon climate
Subtropical Needleleaf Forest
sub-tropical vegetation
subtropical zone in China
subtype
Su Bu Chin
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