at the same time , investigations of a variety of systems including those in plants , amphibians , and , most recently , in mammals have demonstrated that the initiation process of neoplasia may not be as irreversible as previously considered , but in several of these systems , including those in plants and in the mouse teratoma , the neoplastic process appears to be reversible from its initial stages under appropriate conditions .
C0027651
neoplasia
C0027671
neoplastic process