Results 211 to 220 of about 37,556 (266)
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Preliminary identification of the human macular pigment
Vision Research, 1985The human macular pigment has been found to be composed to two chromatographically separable components, which are tentatively identified as lutein [(3R,3'R,6'R)-beta,epsilon-Carotene-3,3'-diol] and zeaxanthin [(3R,3'R)-beta,beta-Carotene-3,3'-diol]. Chromatograms of retinal extracts, obtained by HPLC on three different stationary phases, were found to
R A, Bone, J T, Landrum, S L, Tarsis
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Identification of Oxysterols in Human Bile and Pigment Gallstones
Gastroenterology, 2001Although cholesterol is the most abundant sterol in animal tissues, oxidized products of cholesterol (oxysterols) also occur in mammalian organs and blood and are cytotoxic, atherogenic, and carcinogenic. However, the presence of oxysterols in bile or gallstones has never been reported.Fresh human bile and gallstones were collected.
Lee, SP, Haigh, WGeoffrey
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Identification of Photoreceptor Pigments
2010Rhodopsin, flavins, pterins and carotenoids are pigments that have been identified as participating in the photoreception and photomovement of eukaryotic algae [Lenci, 1975, 1995; Haupt and Hader, 1994; Kreimer, 1994; Lebert, 2001; Siebert, 2003]. Rhodopsin represents a protein (opsin), lipid and chromophore (retinal) complex.
Yuriy I. Posudin +2 more
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Identification of Yersinia pestis Pigment Receptor
2006In the present work the PR of Y. pestis was identified as a complex of a 17 kDa protein associated with two oppositely charged low molecular weight components that cooperatively form a pigment binding domain of PR. The pigment binding activity of PR is dependent on an appropriate proportion of the low molecular weight components and on the absence of ...
Olga N, Podladchikova +1 more
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Identification of titanium pigment in drug addicts' tissues
Histopathology, 1991Autopsy on two drug addicts who had been injecting themselves intravenously with crushed Algafan tablets (active principle, propoxyphene hydrochloride) showed crystals consistent with talc in their lungs and other organs. A fine granular material that appeared black by transmitted light was also present.
J C, Coelho Filho +4 more
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Identification of the pigment in amniotic fluid of erythroblastosis as bilirubin
The Journal of Pediatrics, 1966The yellow pigment found in amniotic fluid obtained from pregnancies with fetusesaffected with erythroblastosis behaves in exactly the same manner as does bilirubin on spectrophotometric scanning and diazotization after chloroform extraction and when developed by reverse phase kieselguhr column chromatography.
J V, Brazie, F A, Ibbott, W A, Bowes
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The isolation and identification of indigoid pigments from urine
Clinica Chimica Acta, 1988A purple pigment, phyriaviolin, and a blue pigment, phyriaazulin, have been found in relatively large amounts in the urine of patients suffering from two diverse pathological conditions, porphyria cutanea tarda and Crohn's disease. The two pigments have been characterised by chemical, spectroscopic, and chromatographic studies and identified to be ...
A H, Jackson +4 more
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A rapid pigmentation test for identification ofCryptococcus neoformans
Antonie van Leeuwenhoek, 1978A rapid pigmentation test for identification of Cryptococcus neoformans is described. The method is based on the formation of a characteristic, mouse-grey to violaceous-black pigment when shake cultures of C. neoformans in a phosphate-buffered, l-DOPA - ferric citrate medium are incubated at 37 C for one hour.
D K, Paliwal, H S, Randhawa
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Applied Spectroscopy, 2009
In most scattering media, the scattering centers have random shapes and sizes, preventing any theoretical approach for the determination of their absorption and scattering coefficients. Three different experimental protocols are here selected and briefly described.
Latour, Gael +2 more
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In most scattering media, the scattering centers have random shapes and sizes, preventing any theoretical approach for the determination of their absorption and scattering coefficients. Three different experimental protocols are here selected and briefly described.
Latour, Gael +2 more
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IDENTIFICATION OF MALIGNANT POTENTIALITIES OF MELANOCYTIC (PIGMENTED) NEVUS
Journal of the American Medical Association, 1956• An attempt is made to state the clinical features by which the physician can decide whether a common pigmented mole, appropriately designated as a melanocytic nevus, should be removed. At the junction or interface between epidermis and dermis lie the melanocytes whose multiplication and extrusion into the dermis is called junctional activity ...
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