INHIBITION OF 3H-THYMIDINE INCORPORATION IN PIG KIDNEY CELLS BY FAR-RED LIGHT* |
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| Authors: | C. H. CHEN &Dagger ,S. A. GORDON |
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| Affiliation: | Division of Biological and Medical Research, Argonne National Laboratory, Argonne, Illinois 60439, U.S.A. |
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| Abstract: | E xposure of pig kidney cells in monolayer culture to far-red light (FRL), near 750 nm, was found to increase the incidence of chromatid aberrations and aberrant cells [1]. Dose–response curves for cell populations predominantly in early S reached a maximum at incident energies of ca. 50 mJ cm-2. We show here that the incorporation of tritiated thymidine by the nuclei of pig kidney cells in monolayer also is inhibited by FRL, with a similar dose-response maximum. |
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