Fig. 10
From: A model for germ cell development in a fully segmented worm
Schematic diagrams on the mechanisms of germ cell distribution in the Nereidid polychaetes. A Hypothetical germ cell distribution in Pe. nuntia (with complete inter-segmental septa) from the pygidium into each newly-generating segment. B Germ cell distribution in Pl. dumerilii (with incomplete inter-segmental septa) from the MPGZ towards the neck region (fifth segment) during the juvenile stage II [13]