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. 2014 Feb 5;9(2):e86861. doi: 10.1371/journal.pone.0086861

Figure 1. Schematic representation of embryo cleavage patterns, and formation of primordial germ cells (PGCs) and their migration patterns in selected vertebrates.

Figure 1

Red area/dots indicate germplasm or the PGCs. NO indicates “not observed”. Note that sturgeons are classified within the Actinopterygii, even though their embryos undergo holoblastic cleavage.