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Science 8 June 1979:
Vol. 204. no. 4397, pp. 1079 - 1081
DOI: 10.1126/science.451551
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Articles

Science, Vol 204, Issue 4397, 1079-1081
Copyright © 1979 by American Association for the Advancement of Science

articles

Nitrite promotes lymphoma incidence in rats

PM Newberne

Rats were exposed to sodium nitrite in food or water at concentrations of 0, 250, 1000, and 2000 parts per million. Lymphoma was increased in all groups fed nitrite; the overall combined incidence was 5.4 percent in 573 control rats and 10.2 percent in 1383 treated rats. The mechanism of cancer induction did not appear to be through the formation of nitrosamines but through a more direct effect of nitrite on the lymphocyte.


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