Histological section through healthy tubular horn showing tubules (purple) and intertubular horn (pale pink)

A schematic cross-section of the hoof wall and adjacent dermis. Coronary (brown) and perioplic horn (pink) are made from tubular horn. Only a representative number of horn tubules are shown, the acctual number ranges from 8 to 15 tubules per mm2.

Dermal papilla and the neighbouring epidermis with the germinal layer (blue), the horn tubule (yellow with blue central stripe) and the inter-tubular horn (brown)