Title: The Formation of the Primate Nail Plate. An Autoradiographic Study in Squirrel Monkey*
Abstract: The classical concept that the human nail plate is solely produced by the nail matrix (1-3) has been challenged by several investigators (4-6) who feel that the nail plate has a tripartite origin: 1) the largest component, the intermediate portion of the nail plate, arising from the matrix, 2) a dorsal portion, arising from the proximal nail fold and 3) a ventral portion, from the nail bed and hyponychium. The present study clearly demonstrates a single origin of the nail plate, totally and solely produced by the matrix.