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Hair follicle
Pronunciation
Definition 1
A shaft or opening on the surface of the skin through which hair grows. (NCI Dictionary)
Definition 2
A tube-like invagination of the epidermis from which the hair shaft develops and into which the sebaceous glands open; the follicle is lined by a cellular inner and outer root sheath of epidermal origin and is invested with a fibrous sheath derived from the dermis. (NCI Thesaurus)
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