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Cell Tissue Res
1980 Jan 01;2061:21-33. doi: 10.1007/bf00233604.
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Ultrastructural observations on changes in cell shape in chromatophores of the sea urchin Centrostephanus longispinus.
Weber W
,
Gras H
.
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Alterations in cell shape of the light-sensitive chromatophores of the sea urchin Centrostephanus longispinus were studied by scanning- and transmission electron microscopy. Transition of the aggregated to the dispersed state is accompanied by incorporation of vesicles into the membrane of the pigment cell. During disperson a system of microtubules originating from centriole-like structures is established throughout the stellate cell. Within restricted areas of the cell, cytoplasmic differentiation and condensation is found. The possible functional significance of the findings is briefly discussed.
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Light-induced alterations in cell shape and pigment displacement in chromatophores of the sea urchin Centrostephanus longispinus.
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