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January 2020 in “Indian Dermatology Online Journal” Pigtail hair is a sign of new hair growth and should be recognized in hair loss conditions like acute telogen effluvium.
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July 2004 in “Journal of experimental zoology. Part B, Molecular and developmental evolution” Reptilian scales, feathers, and hairs evolved from changes in skin cell interactions.
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November 1998 in “Experimental Cell Research” K15 gene is mainly active in the basal layers of hair follicles and epithelia, aiding early skin cell development.
March 2026 in “International Journal of Advanced Biochemistry Research” German shepherd hair varies in color and pattern but is flat with a consistent internal structure.
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December 2015 in “Dermatologic Therapy” Using a certain drug on the skin can help prevent hair loss caused by pulling on the hair.
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July 2013 in “Journal of Animal Physiology and Animal Nutrition” Shorthaired and hairless cat breeds excrete more felinine than longhaired breeds.
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January 2015 in “China Animal Husbandry & Veterinary Medicine” Four keratin genes are crucial for hair growth in Xinji fine wool sheep.
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October 2007 in “médecine/sciences” Mammals can regenerate new hair follicles from skin stem cells.
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December 2021 in “Frontiers in cell and developmental biology” The research identified genes that explain why some sheep have curly wool and others have straight wool.