Head of human fetus (3,6 cm) (40X)

Image copyright: Mathias Nordvi, ARR. (Tissue stain: Azan).

This is a frontal section of the head of a human fetus. As you can see, the palatal prominences are not yet fused (as in this section). This section also displays bone formation in both jaws and Meckle's cartilage. The tissue in this section is poorly preserved, especially the epithelium, and unsuitable to study the odontogenesis.