of the interaction and relationship of both systems is chal In this volume, aspects of neoplastic spread, already elu cidated in Volumes I-IV of this series, are considered lenging indeed. against a broad biological background. The mammalian The volume also reviews environmental oncology and species-specific aspects of environmental chain reactions. It orders constituting the logical framework for man as focal point of a comparative oncology are reviewed. Selected is apparent that the environment plays a significant role in examples of neoplastic progression in various taxonomic the...