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A sebaceous filament is a tiny collection of sebum and dead skin cells around a hair follicle, which usually takes the form of a small, yellow to off-white hair-like strand when expressed from the skin. [1] [2] These filaments are naturally occurring, and are especially prominent on the nose.
An extensively expressed rabicano Arabian horse Classic rabicano markings on flanks and a skunk tail. Rabicano, sometimes called white ticking, is a horse coat color characterized by limited roaning in a specific pattern: its most minimal form is expressed by white hairs at the top of a horse's tail, [1] often is expressed by additional interspersed white hairs seen first at the flank, then ...
Poliosis circumscripta, commonly referred to as a "white forelock", is a condition characterized by localized patches of white hair due to a reduction or absence of melanin in hair follicles. Although traditionally associated with the scalp, poliosis can affect any hairy area on the body, including eyebrows, eyelashes, and beards.
Horses with the classic or true roan pattern may be any base color which is intermingled with unpigmented white hairs on the body. Except for white markings under the control of other genes, the head, mane, tail, and lower legs are dark. [2] Roan is a simple dominant trait symbolized by the Rn allele. [3]
Black hair is the most common in Asia and Africa. [2] Though this characteristic can also be seen throughout Europe as well, it is considerably less common. [3] It can be found in Celtic populations such as in Ireland, Scotland and Wales. [4] Black hair can come in a variety of textures, just as any hair color.
White-bellied agouti A W mice have agouti coloration, with hairs that are black at the tips, then yellow, then black again, and white to tan bellies. [4] Agouti A looks like A W but the belly is dark like the back. [4] Black and tan a t causes a black back with a tan belly. A/a t heterozygotes look like A W mice. [4]
Dr. Gabriela Soza, a dermatologist at PFRANKMD by Dr. Paul Jarrod Frank, tells Yahoo Life that laser hair can be an effective treatment for chin hair, as long as “the hairs are pigmented ...
When the hairs break off at the opening of the follicle, black dots remain. Favus is caused by T. schoenleinii , and is endemic in South Africa and the Middle East. It is characterized by a number of yellowish, circular, cup-shaped crusts ( scutula ) grouped in patches like a piece of honeycomb, each about the size of a split pea, with a hair ...