Mosaic and Regulation Phenomena during the Early Formation of the Chick Blastoderm

Figure 6

Section through the cranial part of a symmetrically hemisectioned chicken blastoderm after 28 hours of culture; neural plate (N); endophyll (E); PG, primordial germ cell in the neighborhood of the endophyll. Hematoxylin-eosin. Bar = 15 𝜇m.