The ultrastructural immunolocalization of loricrin in the hairy epidermis of the platypus (Ornithorhynchus anatinus, Monotremata) indicates it contributes to the formation of the cell corneous envelope

The fine localization of loricrin, a major protein of the cell corneous envelope, is known for the epidermis of few species of placental mammals. The localization of this protein has been studied by immunocytochemistry in the hairy epidermis (orthokeratotic) of the platypus, a representative of monotremes, and compared with the localization of the protein in the epidermis of placental mammals. In the hairy epidermis small keratohyaline granules...