part of part of Homo sapiens hair follicle hair follicle bulge EMAPA:37876 add cell type to CL Convex protrusion of the outer root sheath in the most distal permanent portion of the hair follicle, just below the sebaceous gland and at the insertion site of the muscle arrector pili. Contains the hair follicle stem cells. The area located in the bottom of the permanent portion of a resting (telogen) hair follicle where the cells of the external root sheath of the hair follicle are contiguous with the basal layer of the epidermis; this portion of the follicle is involved in the generation of a new hair at the onset of the hair growth cycle (anagen) and contains the hair follicle stem cells. bulge of hair follicle bulge FMA:70735 UBERON:0005975 BTO:0004904 protuberance skin epithelium