Primordial germ cells came from pole cells and moved in two masses to the laterodorsal abdomen of embryo, and then were enveloped by mesoderm to form germinal ridge.
原始生殖细胞来自极细胞，分两团移至胚胎腹部侧背面，被中胚层细胞包裹，形成生殖脊。
Primordial germ cells came from pole cells and moved in two masses to the laterodorsal abdomen of embryo, and then were enveloped by mesoderm to form germinal ridge.
原始生殖细胞来自极细胞，分两团移至胚胎腹部侧背面，被中胚层细胞包裹，形成生殖脊。
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