Fig. 7
From: A model for germ cell development in a fully segmented worm
Pn-vasa mRNA in embryos and larva. A Fertilized egg showing the Pn-vasa signal in the surface area, top view. B At 2-cell stage, Pn-vasa is expressed in the CD-cell quadrant. C At 4-cell stage, Pn-vasa is only expressed in the D-cell quadrant. D At 65 hpf, dorsal view, Pn-vasa is strongly expressed in the most posterior region (black arrow). The anterior region of the larva is characterized by the presence of a mesodermal band which contains the pigment cells [46]. Scale bar: A–D (100 μm)