MeSH definition : A tube-like invagination of the EPIDERMIS from which the hair shaft develops and into
which SEBACEOUS GLANDS open. The hair 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. (Stedman, 26th ed) Follicles of very long hairs extend into the subcutaneous
layer of tissue under the SKIN.;
A tube-like invagination of the EPIDERMIS from which the hair shaft develops and into
which SEBACEOUS GLANDS open. The hair 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. (Stedman, 26th ed) Follicles of very long hairs extend into the subcutaneous
layer of tissue under the SKIN.
http://www.orpha.net/consor/cgi-bin/OC_Exp.php?Lng=FR&Expert=169 2005 true France French pili annulati scientific and technical information hair diseases hair follicle