
Several criteria for recognition of follicles in catagen have been advanced, namely, loss of metachromasia in the hair papilla, subsidence of mitotic activity there, retraction of the lower portion of the follicle, and thickening and corrugation of the fibrous root sheath. The presence of scattered apoptotic cells in the outer root sheath is an additional marker of early catagen.
2708 Dermatology, 2734 Pathology and Forensic Medicine, Trichotillomania, Mice, Animals, Humans, Alopecia, Hair
2708 Dermatology, 2734 Pathology and Forensic Medicine, Trichotillomania, Mice, Animals, Humans, Alopecia, Hair
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