, Volume 148, Issue 3, pp 437-440

Light-sensitivity of isolated pigment cells of the sea urchin Centrostephanus longispinus

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Pigment cells isolated from the epithelium of the sea urchin Centrostephanus longispinus display light-sensitivity in the same manner as in normal tissue. In complete darkness they have a round to ovoid shape. On illumination a successive extension of pigment-bearing processes can be observed. Darkness leads to a successive retraction of the pseudopodia.

Supported by Deutsche Forschungsgemeinschaft (Grant: We 527/2). We thank Miss Ellen H. Fanning for correction of the English manuscript.