The skin of primates. XXXIII. The skin of the angwantibo (Arctocebus calabarensis)

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Abstract
The general behavior, locomotion, and body from of the angwantibo resemble those of Loris and Nycticebus. Its skin, however, is similar to that of Pottos and Galagos; singular among the similarities is the occurrence of alkaline phosphatase‐positive dendritic cells in the epidermis. The presence of elongated, sausageshaped end‐organs in the mucocutaneous region, the absence of arrector pili muscle, and the absence of alkaline phosphatase in the hair follicle nerve end‐organs are distinctive features of angwantibos. These animals have a well‐formed, complete nictitating membrane, thereby differing from all other primates studied.