A section through the middle of somite 6.
Observe:
1. The notochord changing from a plate in the roof of the gut to a rounded shape.
2. The large myocoele in the center of the somite filled with a clump of cells.
Keywords: cut edge of amnion, cut edge of umbilical vesicle, left coelomic cavity, myocoele, notochord, right umbilical vein, somite 6 (C-2), vitelline plexus
Source: Atlas of Human Embryos.