After growing them, they found their structures had matured into the components that make teeth, including dentin, enamel, dental pulp, blood vessels, and periodontal ligaments.

After growing them they found their structures had matured into the components that make teeth including dentin enamel dental pulp blood vessels and periodontal ligaments.

Thirty weeks later two-millimeter-wide molar crowns emerged complete with pulp chambers root tips and bonelike layers of dentin and in a first enamel.