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Biol Bull 138: 194-199. (April 1970)
© 1970 Marine Biological Laboratory
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THE EFFECT OF CESIUM-137 GAMMA RAYS ON REGENERATION IN TUBULARIA

MARGARET SLAUGHTER 1, FLORENCE C. ROSE 2, and ANTHONY LIUZZI 3

1 Department of Epidemiology and Public Health, Yale University, School of Medicine, New Haven, Connecticut 06510
2 Department of Anatomy, Tulane University, New Orleans, Louisiana 70037
3 Marine Biological Laboratory, Woods Hole, Massachusetts 02543

1. Short tentacles developed on hydranths regenerated from stems of Tubularia exposed to cesium-137 gamma irradiation at exposure levels of 10,000 R and 20,000 R.

2. Those hydranths that did regenerate from irradiated stems tended to drop off sooner than hydranths regenerated from un-irradiated stems.

3. Exposures of 150,000 R and 200,000 R completely stop regeneration in Tubularia; 300,000 R is fatal to the organism.

4. The observed delay in time of regeneration increased as the exposure levels increased and thus appeared to be dose dependent.






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