| exogenous pigmentation | Discoloration of the skin or tissues by a pigment introduced from without. (05 Mar 2000) |
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| exogenous | <biology> Developed or originating outside the organism, as exogenous disease. Origin: Gr. Gennan = to produce (18 Nov 1997) |
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| exogenous creatinine clearance | A term distinguishing measurements based on infusing creatinine intravenously to raise its plasma concentration and facilitate its accurate chemical determination. (05 Mar 2000) |
| exogenous cycle | The portion of a parasitic life cycle occurring outside the host. (05 Mar 2000) |
| exogenous depression | Similar signs and symptoms as endogenous depression but the precipitating factors are social or environmental and outside the individual. (05 Mar 2000) |
| exogenous DNA | <molecular biology> DNA originating outside an organism. (09 Oct 1997) |
| exogenous fibres | Nerve fibre's by which a given region of the central nervous system is connected with other regions; the term applies to both afferent and efferent fibre connections. (05 Mar 2000) |
| exogenous ochronosis | Pigmentation of the skin of the face and elsewhere from prolonged topical exposure to hydroquinone-containing bleaching creams. (05 Mar 2000) |
| accessory pigment | <biochemistry> Light-absorbing pigments such as carotenoids and phycobilins that serve as complements to photosynthesis. (06 May 1997) |
| bile pigment haemoglobin | <protein> A protein which is formed from the breakdown of haemoglobin (a protein that carries oxygen in the blood) and is a precursor to the bile pigment biliverdin. (09 Oct 1997) |
| malarial pigment | A dark brown, granular pigment which rotates the plane of polarised light and has other properties similar to formalin pigment; occurs in parasites, such as Plasmodium malariae, around brain capillaries, and in fixed macrophages of spleen, liver, bone marrow, and lymph nodes. See: malarial pigment stain. (05 Mar 2000) |
| malarial pigment stain | <technique> A stain using phloxine-toluidine blue O sequence; malarial pigment and nuclei are bluish, erythrocytes and cytoplasm are red to orange; found in phagocytic cells of the reticuloendothelial system. (05 Mar 2000) |
| melanotic pigment | <protein> Pigments largely of animal origin. High molecular weight polymers of indole quinone. Colours include black/brown, yellow, red and violet. Found in feathers, cuttle ink, human skin, hair and eyes and in cellular immune responses and wound healing in arthropods. (18 Nov 1997) |
| chymotropic pigment | A pigment dissolved in the vacuole of a plant cell. Origin: G. Chymos, juice, + trope, turning, inclination, + -ic (05 Mar 2000) |
| pigment | 1. Any material from which a dye, a paint, or the like, may be prepared; particularly, the refined and purified colouring matter ready for mixing with an appropriate vehicle. 2. <physiology> Any one of the coloured substances found in animal and vegetable tissues and fluids, as bilirubin, urobilin, chlorophyll, etc. 3. Wine flavored with species and honey. <physiology> Pigment cell, a small cell containing colouring matter, as the pigmented epithelial cells of the choroid and iris, or the pigmented connective tissue cells in the skin of fishes, reptiles, etc. Origin: L. Pigmentum, fr. The root of pingere to paint: cf. F. Pigment. See Paint, and cf. Pimento, Orpiment. Source: Websters Dictionary (01 Mar 1998) |
| pigment cell | Cells that contain pigment: See: melanocytes, chromatophores. (18 Nov 1997) |