Mesotheliomas of Animals is the first book to provide a comprehensive compilation of the diverse and often disparate literature regarding animal mesotheliomas. The compendium presents evidence to support the existence of "background" and "threshold," both of which are concepts central to the controversy surrounding nonasbestos-related mesotheliomas. Examples of "background" tumors (those which are nonasbestos-related) are described in detail, and indications of "threshold" for the induction of mesotheliomas following exposure to asbestiform and nonasbestiform agents are evident from the...