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Science 13 September 1968:
Vol. 161. no. 3846, pp. 1153 - 1155
DOI: 10.1126/science.161.3846.1153
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Articles

Echinoderms: An Autoradiographic Study of Assimilation of Dissolved Organic Molecules

A. R. Fontaine 1 and Fu-Shiang Chia 1

1 Dove Marinie Laboratory and Department of Zoology, University of Newcastle-upon-Tyne, Newcastle-upon-Tynze 2, England

In a holothurian and an ophiuroid, tritiated glucose and glycine in great dilution are removed from seawater by uptake through the skin. Cells differ in their competence to metabolize specific nutrients, an indication that there are specialized cellular responses to exogenous organic molecules. Embryonic ophiuroid tissues have an exceptional capacity for assimilation.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)