(n.) An undue development of dark-colored pigment in the skin or its appendages; -- the opposite of albinism.
(n.) A disease; black jaundice. See Mel/na.
Example Sentences:
(1) In agreement with the InsP3 assays, phorbol ester (TPA) has no effect on melanization, tyrosinase activity or cell proliferation.
(2) These skins preserve the aspects and behaviour of normal human skin but after 1 month they have a heavy melanic hyperpigmentation.
(3) The skin is heavily pigmented with the epidermis, pilary canals, and the outer cell layer of the apocrine duct richly melanized.
(4) A ventrally localized melanization inhibiting factor (MIF) has been suggested to play an important role in the establishment of the dorsal-ventral pigment pattern in Xenopus laevis [Fukuzawa and Ide:Dev.
(5) The processes of melanosome maturation in the late-melanizing goldfish are evident from these observations.
(6) Melanin granules inside keratinocytes were fully melanized.
(7) Melanization in vivo, and in vitro, due to a polyphenoloxidase released by the blood cells, was stimulated by the presence of the fungal cell wall surface.
(8) The endogenous norepinephrine level was increased in eyes with melanic pigments and the exogenous amine uptake was decreased.
(9) The data suggest that host endocrines are involved in the encapsulation and melanization reactions of the larvae, but the nature of the involvement is not known.
(10) These findings suggest that glutathione provides a new situation of interrupted melanogenesis in which melanization cannot proceed despite complete formation of melanosome matrix structure and a lack of inhibition of cellular metabolisms including protein glycosylation.
(11) Conidiogenous cells in both species developed melanin only within the lowermost part of the lateral walls while the other cells of the conidium were uniformly melanized around the circumference of the cell; melanin in these cells being deposited within, at least, half the width of the cell wall.
(12) These changes may indicate the gradual melanization of the lipopigments due to auto-oxidation of catecholamines.
(13) Depending on the dose or period of feeding, symptoms were cuticular melanization, swellings in intersegmental regions, cuticular lesions, rupture of the body wall, and death.
(14) Intracellular melanization, a defense or an immune response in the thoracic muscle cells, was investigated in a refractory strain of Anopheles quadrimaculatus infected with larvae of Brugia malayi.
(15) Difficulty encountered in resolving grains of exposed photographic emulsion in autoradiographs of the densely melanized retinal pigment epithelium was solved by using epi-polarized or incident light microscopy.
(16) Inhibition of tyrosine hydroxylase with alpha-methyl-p-tyrosine retarded growth and prevented melanization of limb regenerate in adult newts (Triturus cristatus).
(17) sinensis was 72.3%; the percentage of melanized microfilariae in young Cx.
(18) It is suggested that the surface of the parasite may have inhibitors against enzyme systems causing melanization.
(19) During melanization, oxidation products of tyrosine are generated which are toxic to the cells.
(20) The melanization response of adult female Aedes aegypti (black-eyed Liverpool strain) against intrathoracically inoculated Dirofilaria immitis microfilariae (mff) was assessed with transmission electron microscopy.
Pigment
Definition:
(n.) Any material from which a dye, a paint, or the like, may be prepared; particularly, the refined and purified coloring matter ready for mixing with an appropriate vehicle.
(n.) Any one of the colored substances found in animal and vegetable tissues and fluids, as bilirubin, urobilin, chlorophyll, etc.
(n.) Wine flavored with species and honey.
Example Sentences:
(1) The results also suggest that the dispersed condition of pigment in the melanophores represents the "resting state" of the melanophores when they are under no stimulation.
(2) Differences between the albino vs pigmented strains were observed following injections of saline.
(3) Two lectins, wheat germ agglutinin (WGA) and peanut agglutinin (PNA), were used to compare domains within the interphotoreceptor matrices (IPM) of the cat and monkey, two species where the morphological relationship between the retinal pigment epithelium (RPE) and photoreceptors is distinctly different.
(4) Uptake studies with 22Na were performed in cultured bovine pigmented ciliary epithelial cells, in order to characterize mechanisms of Na+ transport.
(5) CW Nd:YAG light transmitted by fiber optic cable and sapphire crystal was applied transsclerally to the ciliary body of pigmented and albino rabbits.
(6) The evolution and function of multiple forms of a given photosynthetic pigment in vivo are discussed.
(7) Changes in protein phosphorylation induced by phagocytic challenge were identified in cultured rat retinal pigment epithelium (RPE) following exposure to isolated rat rod outer segments (ROS) or to polystyrene latex microspheres (PSL).
(8) Both categories frequently showed pellagrous pigmentation and mucocutaneous signs of B-vitamin deficiency.
(9) We show that, in digitonin-permeabilized goldfish xanthophores, the pigment organelles can be induced to disperse by a combination of cAMP, ATP, and xanthophore cytosol.
(10) A red pigment produced by the actinomycete strain B 4358 was identified as butyl-meta-cycloheptylprodiginine (4) by 1H, 13C and correlation via long range coupling NMR spectra.
(11) Two unusual types of oral mucosal pigmentation are reported.
(12) These results are consistent with the idea that RPE pigment dispersion is triggered by a substance that diffuses from the retina at light onset.
(13) Rhabdomeres are substantially smaller and visual pigment is nearly eliminated when Drosophila are carotenoid-deprived from egg to adult.
(14) It is hypothesized that deposition of bilirubin in tissues takes place as an ongoing event, the deposited pigment being eliminated by bilirubin oxidase in healthy infants.
(15) The calculated separation between the centers of these two pigments (using an extended version of the exciton theory) is about 10 A, the pigments' molecular planes are tilted by about 20 degrees, and their N1-N3 axes are rotated by 150 degrees relative to each other.
(16) We have investigated enhancement of pigmentation in inbred C3H- mice using tail skin as a model for testing the effects of phosphorylated DOPA (DP) and ultraviolet radiation.
(17) Although mucocutaneous pigmentation was not present in two of the three patients, the features of intestinal polyposis are consistent with those of Peutz-Jeghers syndrome.
(18) Cytochromes b, c(555), possibly c(1), cytochrome oxidase, a carbon monoxide-binding pigment, and flavoproteins were detectable in the spectra of both intact cells and mitochondria.
(19) The addition of alcohol to the drinking-water resulted in the formation of stones rich in pigment.
(20) The total number of neuronal cell bodies was 25% lower in AIDS (P less than 0.01) than in 12 age-matched controls, although the volume density of neuronal melanin did not differ from that of controls because the percentage of pigmented cell bodies was higher (P less than 0.01) and the cell bodies were more fully packed with melanin in AIDS.