Results 81 to 90 of about 21,945 (222)

SPECTRAL PROPERTIES OF TWO WATER-SOLUBLE MELANINS [PDF]

open access: yesBiotechnologia Acta
Aim. The work was purposed to study the spectral properties of two types of water-soluble melanins to clarify the nature of the optical absorption and emission centers in them. Materials and methods.
V.M. Kravchenko   +8 more
doaj   +1 more source

Pigmented melanoma cell migration study on murine syngeneic B16F10 melanoma cells or tissue transplantation models [PDF]

open access: yes, 2019
Melanoma is a lethal form of skin cancer with poor prognosis, especially due to the early metastatic feature. Recent studies have shown that the melanin pigment influences the nanomechanical properties and, therefore, the metastatic behavior of the ...
Buteică, Sandra Alice   +5 more
core   +2 more sources

Solubility of Melanins [PDF]

open access: yesNature, 1952
IN further attempts to find a solvent for melanin which would be of use in histological work, the following substances have been found to dissolve, in the cold, the pigments extracted from the ink sac of Sepia officinalis and melanoma tissue, and those prepared from adrenaline and 3,4-dihydroxyphenylalanine (dopa): ethylene glycol monomethyl ether ...
openaire   +2 more sources

Estudo da afinidade da melanina pelo ion Fe(III) [PDF]

open access: yes, 2009
TCC (graduação) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas, Curso de Química.Melanina é um pigmento escuro formado pela oligomerização de moléculas, com grupos majoritários catecol e quinone-imina, provenientes da ...
Costa, Thiago Guimarães
core  

How common is albinism really? Colour aberrations in Indian birds reviewed [PDF]

open access: yes, 2016
The file attached is the Published/publisher’s pdf version of the ...
Mahabal, A   +3 more
core  

Techniques of digital image analysis for histological quantification of melanin [PDF]

open access: gold, 2012
Hélio Amante Miot   +3 more
openalex   +1 more source

Paleontology: Outrunning Time [PDF]

open access: yes, 2017
In this paper, I discuss several temporal aspects of paleontology from a philosophical perspective. I begin by presenting the general problem of “taming” deep time to make it comprehensible at a human scale, starting with the ...
Huss, John
core   +1 more source

Comparative Evaluation of Clinical Efficacy of Diode LASER and Cryosurgery for Gingival Pigmentation: A Split-Mouth Randomized Clinical Study

open access: yesPesquisa Brasileira em Odontopediatria e Clínica Integrada, 2023
Objective: To compare and evaluate the clinical efficacy of diode laser and cryosurgery for treating melanin pigmentation of gingiva. Material and Methods: A total of twenty-five subjects with physiological gingival pigmentation on the facial aspect of ...
Disha Gupta   +3 more
doaj  

Biosynthesis of food constituents: Natural pigments: Part 1

open access: yesCzech Journal of Food Sciences, 2007
This review article gives a survey of the generally accepted biosynthetic pathways that lead to the most important natural pigments in organisms closely related to foods and feeds.
Jan Velíšek   +2 more
doaj   +1 more source

Chemistry of Melanin. IV. Electron Micrography of Natural Melanins.

open access: yesExperimental Biology and Medicine, 1947
Summary1. Melanin granules were obtained by differential centrifugation from the S-91 and Harding-Passey transplantable mouse melanomas, from the choroid, ciliary body and iris of the beef eye, and...
H. S. Mason   +3 more
openaire   +2 more sources

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