pigmentation


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pigmentation

 [pig″men-ta´shun]
the deposition of coloring matter; the coloration or discoloration of a part by a pigment.

pig·men·ta·tion

(pig'men-tā'shŭn),
Coloration, either normal or pathologic, of the skin or tissues resulting from a deposit of pigment.

pigmentation

/pig·men·ta·tion/ (pig″men-ta´shun) the deposition of coloring matter; the coloration or discoloration of a part by a pigment.

pigmentation

(pĭg′mən-tā′shən)
n. Biology
1. Coloration of tissues by pigment.
2. Deposition of pigment by cells.

pigmentation, pigmented

See pigment.

pig·men·ta·tion

(pig'mĕn-tā'shŭn)
Coloration, either normal or pathologic, of the skin or tissues resulting from a deposit of pigment.

pigmentation

Coloration of any part of the body, especially the skin. Normal pigmentation of skin, hair and eyes is occasioned by the presence of melanin-a brown or black pigment produced by cells called melanocytes. Abnormal pigmentation may occur from local or general loss of melanin. ALBINISM is caused by a general deficiency of melanin. Other causes of abnormal pigmentation include skin disease, pregnancy (see CHLOASMA), ADDISON'S DISEASE, CUSHING'S SYNDROME, JAUNDICE and HAEMOCHROMATOSIS.

pigmentation

normal/abnormal skin/tissue coloration; due to exaggeration of normal pigmentation or ectopic pigment deposition

pigmentation

the deposition of coloring matter; the coloration or discoloration of a part by a pigment. See also hyperpigmentation, hypopigmentation.

bacterial pigmentation
production of pigment is a characteristic of some bacteria which may be useful in identification. Examples are Pseudomonas aeruginosa, Chromobacterium violaceum and Serratia marcescens.
hematogenous pigmentation
pigmentation produced by accumulation of hemoglobin derivatives, such as hematoidin or hemosiderin.
References in periodicals archive ?
Mice, as well as humans who have albinism or lack of pigmentation, have profound vision loss and changes in the eye structure, especially the macula, the oval-shaped area near the center of the retina associated with a person's ability to see clearly.
Unlike other skin products that rely on one approach or key active, SKIN ACTIVE contains many novel ingredients like Maltobionic acid, NeoGlucosamine, and Swiss apple stem cell extract that work together to stimulate cell renewal, even pigmentation, boost collagen and protect against oxidative damage.
Plus, the lack of pigmentation is more noticeable to predators.
For Magen BioSciences, the study in Cell provides important proof of concept for the company's approach to identify and develop therapeutic treatments for pigmentation disorders.
Beleza and her colleagues studied three genes associated with lighter skin pigmentation.
Kundu, MD, FAAD, assistant professor and director of the Center for Ethnic Skin in the department of dermatology at Northwestern University Feinberg School of Medicine in Chicago, discussed two of the most common skin conditions in Asians and how treatment also involves addressing the ensuing pigmentation problems.
Working on the skin pigmentation process balance, WHITONYL[R] gives the skin a luminous and ultra-refined complexion.
A ``gray'' coat actually is a combination of white and black hairs, typically the result of a horse born bay or chestnut rapidly losing his pigmentation.
While chemists puzzled over pigmentation in petals, biologists also took an interest in flower color, but for different reasons.

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