1. Diencephalon
2. Heart
3. Liver
4. Lung bud
5. Mesencephalon
6. Notochord
7. Pancreas
8. Pericardial cavity
9. Pharyngeal pouches
10. Rathke's pouch
11. Rhombencephalon
12. Sclerotome
13. Somatic mesoderm
14. Spinal cord
15. Spinal ganglion
16. Spinal nerve
17. Stomach
18. Telencephalon
19. Tongue
20. Umbilical cord
21. Ureteric bud

Technique: Paraffin section
Staining: Alcian-kernechtrot Orientation: Longitudinal section Developmental age: 5 weeks Magnification (objective): x 10