(1) Retention of the sebaceous secretions, and dilation of the follicle, may lead to cyst formation.(2) Doxycycline is a tetracycline derivative that exhibits excellent penetration into follicles and sebaceous glands.(3) Cutaneous glands include the sebaceous , sweat, lacrimal, and mammary glands.(4) Sebaceous glands develop at puberty in response to androgen stimulation and are attached to the follicle canal by sebaceous ducts.(5) Their sebaceous differentiation is confirmed by epithelial membrane antigen expression.(6) They are made up predominantly of ectodermal components (hair, calcifications, sebaceous material) and have a large cystic component.(7) The 16-carbon acids are predominant in sebaceous cells.(8) It is not true that we squeezed sebaceous material from the sinus.(9) The mass was excised and was characterized histologically as another proliferative cystic sebaceous tumor.(10) Sebaceous hyperplasia is common in middle-aged and elderly persons.