A comedo, a skin blemish, a type of acne vulgaris, where a pore becomes clogged with a dark, hard, cheesy keratin-filled substance forming a hard black "head" on the skin's surface
A disease of turkeys caused by the protozoan Histomonas meleagridis Also called histomoniasis or infectious enterohepatitis
also known as a comedone, it is a plug of oxidised sebum and keratin which blocks the openings of pores Often seen in acne
A comedo, a skin blemish, a type of acne vulgaris, where a pore becomes clogged with a dark, hard, cheesey keratin-filled substance forming a hard black "head" on the skins surface