Letters Mutagens and Carcinogens By G. P. Redei See allHide authors and affiliations Science 04 Dec 1970:Vol. 170, Issue 3962, pp. 1038-1039DOI: 10.1126/science.170.3962.1038 G. P. Redei Find this author on Google Scholar Find this author on PubMed Search for this author on this site Article Info & Metrics eLetters PDF This is a PDF-only article. The first page of the PDF of this article appears above.