作者: Gary M. Wessel
DOI: 10.1016/BS.CTDB.2015.11.030
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摘要: Primordial germ cells are usually made early in the development of an organism. These mother all stem that necessary for propagation species, yet use highly diverse mechanisms between organisms. How they specified, and when where form, central to developmental biology. Using organisms study this is illuminating understanding mechanics these essential function identifying breadth evolutionary changes have occurred species. This essay emphasizes how echinoderms may contribute patchwork quilt our line formation during embryogenesis.