Positions Available. Postdoctoral Position in Immunology. An appointment is available for studies in cellular immunity with special reference to the “transfer factor” phenomenon and other aspects of tumor immunology and lymphoid cell biology relating to the development of immunotherapy with the use of “transfer factor”. Appointment will be for a two-year period. Although this is primarily a research position, participation in teaching programs for medical students will be encouraged and outstanding research and teaching performance may be the basis of subsequent faculty appointment. An application should include a curriculum vitae and a brief description of research interests. Letters of reference from two senior scientists should be submitted separately. Send applications and inquiries to Dr. A. Arthur Gottlieb, Chairman, Department of Microbiology and Immunology, Tulane Medical School, 1430 Tulane Avenue, New Orleans, La. 70112. An equal opportunity/affirmative action employer.