wear and tear pigment
Look at other dictionaries:
Pigment — A substance that gives color to tissue. Pigments are responsible for the color of skin, eyes, and hair. * * * 1. Any coloring matter, as that of the red blood cells, hair, iris, etc., or the stains used in histologic or bacteriologic work, or… … Medical dictionary
lipochrome — 1. A pigmented lipid, e.g., lutein, carotene. SYN: chromolipid. 2. A term sometimes used to designate the wear and tear pigments, e.g., lipofuscin, hemofuscin, ceroid. More precisely, lipochromes are yellow pigments that seem to be identical to … Medical dictionary
art conservation and restoration — Maintenance and preservation of works of art, their protection from future damage, deterioration, or neglect, and the repair or renovation of works that have deteriorated or been damaged. Research in art history has relied heavily on 20th and… … Universalium
Iris (anatomy) — Iris The iris is the blue area. The other structures visible are the pupil center and the white sclera surrounding the iris. The overlying cornea is pictured, but not visible, as it is transparent … Wikipedia
aging — ag·ing (āʹjĭng) n. 1. The process of growing old or maturing. 2. An artificial process for imparting the characteristics and properties of age. * * * Gradual change in an organism that leads to increased risk of weakness, disease, and death. It… … Universalium
blood — bloodlike, adj. /blud/, n. 1. the fluid that circulates in the principal vascular system of human beings and other vertebrates, in humans consisting of plasma in which the red blood cells, white blood cells, and platelets are suspended. 2. the… … Universalium
Feather — For other uses, see Feather (disambiguation). Feather variations Feathers are one of the epidermal growths that form the distinctive outer covering, or plumage, on birds and some theropod dinosaurs. They are considered the most complex… … Wikipedia
Lipofuscin — Micrograph showing lipofuscin in a liver biopsy with ground glass hepatocytes. H E stain. Lipofuscin is the name given to finely granular yellow brown pigment granules[1] … Wikipedia
painting, Western — ▪ art Introduction history of Western painting from its beginnings in prehistoric times to the present. Painting, the execution of forms and shapes on a surface by means of pigment (but see also drawing for discussion of depictions in … Universalium
lipofuscin — Brown pigment granules representing lipid containing residues of lysosomal digestion and considered one of the aging or “wear and tear” pigments; found in liver, kidney, heart muscle, adrenal, and ganglion cells. * * * li·po·fus·cin .lip ə fəs ən … Medical dictionary
