pigmentation, sebum, sebaceous glands, superoxide, elastin, catalase, collagen, pigment, melanocytes, glutathione, nitric oxide, pineal gland, carotenoid, tyrosinase, androgens, suberin, enzyme, epidermis, nadh, enos, riboflavin, follicles, protein, retinol, lactase, luteolin, suppressor gene, adrenal cortex, sebaceous gland, linoleic acid, mitochondria, proteoglycan, prostaglandin, antioxidants, arginase, citrulline, rhodopsin, thyroid hormone, centrosomes, chlorophyll, angiotensin ii, mucin, anthocyanin, oxidants, thiols, anabolism, pyrimidines, hydroperoxide, peroxidation, lipin, morphogen, chloroplasts, melatonin, vitamin d, provitamin, autoantibody, uric acid, monocyte, asparagine, lysozyme, porphyrins, anthocyanins, aldosterone, estrogen, methylation, cytokines, peroxisome, elastase, superoxide anion, granulocytes, fucose, catechin, globin, auxin, plastids, photoreceptor, tyrosine, superior colliculus, beta endorphin, calcium, proteolysis, osteoblast, hair follicle, lycopene, endometrium, urease, lacrimal gland, corpus luteum, glycosylation, aqueous humor, superoxide dismutase, plasminogen, oxidative phosphorylation, dermis, gluconeogenesis, osteoclast, nadph, opsin, ectoderm, nephron, phospholipid, myelin, glycogen, lipid, keratin, phosphorus, bitumen, carbohydrate, sugar, tannin, fibrin, proteid, acetylcholine, cholesterol, histamine, igm, magnesium

colored, coloured, dark, dark-skinned, freckle, lentigo, melanise, melanism, melanize, melanocyte, melanosis

animal pigment