title: Immunosuppression and Neoplasia.
abstract: This entire session is based upon a fairly simple assumption that the state of the host immune system is an important factor in determining whether or not malignant tumors develop and/or with what aggressiveness the tumors grow and spread after their inception. The objective of the presentation is to report to you some observations that quite definitely support an immunologic hypothesis for the etiology of cancer.
authors.forename: I
authors.initials: I
authors.lastname: Penn
authors.forename: Th E
authors.initials: TE
authors.lastname: Starzl