Fifty-two previous accounts of neoplastic growths in Amphibia are listed and summarized. Six new cases, including five of lymphosarcoma, are described. The diversity, sites, and distribution of amphibian tumors are discussed.

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This investigation has been carried out in the Embryology Laboratory, Department of Zoology, Oxford University, and at the Institut de Zoologie, Geneva University. The work has been supported by grants from the Medical Research Council (U.K.) and the Fonds National Suisse pour la Recherche Scientifique.

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©1962 American Association for Cancer Research.
1962
Cancer Research, Inc.