Results 181 to 190 of about 2,198 (218)

An approach to the study of cytodifferentiation in melanophores

Developmental Biology, 1963
Abstract A method is described whereby the melanoblasts on the yolk sac of a fish ( Fundulus heteroclitus ) can be identified and staged throughout the period of their early differentiation. The method is based on the nuclear volume increase observed in these cells.
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Regulation of pigmentation in zebrafish melanophores

Pigment Cell Research, 2006
SummaryIn comparison with the molecular genetics of melanogenesis in mammals, the regulation of pigmentation in poikilothermic vertebrates is poorly understood. Mammals undergo morphological colour change under hormonal control, but strikingly, many lower vertebrates display a rapid physiological colour change in response to the same hormones.
Darren W, Logan, Sally F, Burn, Ian J, Jackson   +2 more
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Pharmacological studies on teleost melanophores

European Journal of Pharmacology, 1969
Abstract Thirty-three drugs have been administered to the pencil fish ( Nannostomus beckfordi anomalus ) to determine the nature of the innervation of the melanophores. The pencil fish showed pigment aggregation (paling) to all sympathomimetic drugs tested and pigment dispersal (darkening) when sympathetic transmission was blocked at any level.
N E, Ruffin, B L, Reed, B C, Finnin
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Melanophore activity of urodele melanocytes

Canadian Journal of Zoology, 1971
Melanophore activity of dermal and epidermal melanocytes in Taricha torosa and Ambystoma gracile has been observed with tricaine methanesulfonate (MS222) dissolved in habitat water, as well as with injected intermedin or injected epinephrine.
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Fine structure of tadpole melanophores

The Anatomical Record, 1966
AbstractThe fine structure of frog tadpole melanophores has been found to be different from that of teleost chromatophores (Falk and Rhodin, '57). The cytoplasm is not divided into inner and outer regions. Organelles are distributed throughout the cytoplasm. A special search for microtubules was made and only a single such structure could be found.
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Proliferation of amphibian melanophores in vitro

Developmental Biology, 1974
Abstract Melanophores were isolated from the tail skin of bullfrog tadpoles and cultured in vitro . Cell proliferation occurred 3–4 weeks after inoculation and the cells doubled their number about every 5 days to form a colony of uniformly pigmented melanophores.
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Lessons from the Melanophore

The FASEB Journal, 1999
G G, Borisy, V I, Rodionov
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Control of Melanophores in Amphibians

1966
In the vast literature which has accumulated during the last fifty years concerning the regulation of vertebrate melanophores, studies on the pituitary and its hormone, intermedin (MSH, MDH, chromatotrophic hormone, etc.) have dominated the field (for literature see Parker [23], Fingerman [14], Waring [26]).
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The melanophore hormone

Ergebnisse der Physiologie Biologischen Chemie und Experimentellen Pharmakologie, 1941
Frances K. Oldham, N. O. Calloway, E. M. K. Geiling   +2 more
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AN OBJECTIVE MELANOPHORE INDEX

Acta Anatomica, 2008
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