Join between ear and jaw bones in the echidna at hatching (IMAGE)

eLife

Join between ear and jaw bones in the echidna at hatching

Caption

Images of the join between the ear bones and upper jaw in the echidna at hatching. The left image shows the cartilages in blue, while the right shows the expression of type II collagen (green) and Sox9 (red), both necessary for cartilage development.

Credit

Anthwal et al. (CC BY 4.0)

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