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Ultrastructure of cephalopod chromatophore organs
Cell and Tissue Research, 1968The chromatophore organs of Loligo opalescens are composed of five different types of cells: the chromatophore proper; radial muscle fibers; neuronal processes (axons); glial cells; and chromatophoral sheath cells. The surface of a retracted chromatophore is extensively folded, but upon contraction of the radial muscle fibers it becomes flattened and ...
R A, Cloney, E, Florey
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Chromatophore Effect of Adrenocorticotrophic Hormone
Nature, 1954ADRENOCORTICOTROPHIC hormone preparations produce an effect1 similar to and even more pronounced than that of the pituitary chromatophore hormone intermedine2. When either of these hormones is injected into pale frogs, the melanophores ‘expand’ and the skin darkens. The identity of the two hormones has been assumed3 but contested4. In the frog, however,
O, PECZENIK, M, ZEI
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Chromatophores of Rhodospirillum rubrum
Nature, 1952THE pigments of pbiotosynthetic bacteria are not localized in chloroplasts, and appear upon microscopic examination to be evenly distributed throughout the cell. It has long been known that the absorption maxima of the bacteriochlorophyll and carotenoid pigments are markedly shifted following extraction with organic solvents—a fact first interpreted by
A B, PARDEE +2 more
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Biological Reviews, 1930
Summary.Chromatophores, the parts concerned with the colour changes in animals, are best developed in the cephalopods, the crustaceans, and the three lower classes of vertebrates, the fishes, amphibians, and reptiles. In the cephalopods chromato‐ phores are really diminutive organs in that each one consists of a central coloured cell which is expanded ...
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Summary.Chromatophores, the parts concerned with the colour changes in animals, are best developed in the cephalopods, the crustaceans, and the three lower classes of vertebrates, the fishes, amphibians, and reptiles. In the cephalopods chromato‐ phores are really diminutive organs in that each one consists of a central coloured cell which is expanded ...
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The Physiology of Chromatophores
1959Publisher Summary This chapter provides an overview of the chromatophores of vertebrates and invertebrates. The chapter also discusses the crustaceans, the class most intensively investigated in past several years. Physiological color changes involve alterations on appropriate stimulation in the degree of dispersion of pigment granules in ...
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ASME 2011 Summer Bioengineering Conference, Parts A and B, 2011
Cephalopods are a class of mollusks that include cuttlefish, octopus, and squid1 that are capable of adaptive display capabilities. The cephalopods unique adaptable appearance is enabled by a sequence of thin layers in their soft and stretchable skin2 that allows them to quickly change color (Figure 1a), pattern, iridescence and texture (with the ...
Keith M. Kirkwood +4 more
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Cephalopods are a class of mollusks that include cuttlefish, octopus, and squid1 that are capable of adaptive display capabilities. The cephalopods unique adaptable appearance is enabled by a sequence of thin layers in their soft and stretchable skin2 that allows them to quickly change color (Figure 1a), pattern, iridescence and texture (with the ...
Keith M. Kirkwood +4 more
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The physiology of flatfish chromatophores
Microscopy Research and Technique, 2002AbstractMost flatfish, of the order Pleuronectiformes, possess a white lower side, and a brown or grey upper side. This upper side can display integumentary patterning with dark areas and colored or white spots. Chromatophores in flatfish are dermal and epidermal melanophores, as well as dermal xanthophores, erythrophores, iridophores, and leucophores,
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1971
Publisher Summary Bacterial chromatophores exhibit certain biochemical properties similar to those of chloroplasts and are comparable to those of plant or animal mitochondria. For instance, chromatophores carry out cyclic photophosphorylation similar to that of chloroplasts; on the other hand, chromatophores, like mitochondria, catalyze a dark ...
Albert W. Frenkel, Rodger A. Nelson
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Publisher Summary Bacterial chromatophores exhibit certain biochemical properties similar to those of chloroplasts and are comparable to those of plant or animal mitochondria. For instance, chromatophores carry out cyclic photophosphorylation similar to that of chloroplasts; on the other hand, chromatophores, like mitochondria, catalyze a dark ...
Albert W. Frenkel, Rodger A. Nelson
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