Chronic carcinogenicity study of gasoline vapor condensate (GVC) and GVC containing methyl tertiary-butyl ether in F344 rats.

J Toxicol Environ Health A · 2011 · PMC4285141 · PMID 21432714

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an overall trendno p-value reported

After testing for an overall trend among test groups by an analysis of variance, Bartlett's test was used to establish the homogeneity of the data.

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showed a trendno p-value reported

Mammary-gland fibroadenoma The incidence of mammary-gland fibroadenoma showed a trend for increased incidence with GMVC exposure, but there were no group differences.

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a significant trendno p-value reported

Thyroid adenomas and carcinomas Thyroid adenomas and carcinomas occurred in males exposed to GVC or GMVC, but only the incidence of follicular-cell carcinoma among GVC-exposed rats showed a significant trend with increasing exposure concentration.

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.