This volume summarizes the Proceedings of the fourth biennial Cancer Teaching Symposium held on March 7 and 8, 1970, at the University of Chicago Pritzker School of Medicine. The program was prepared by Drs. LAWRENCE ALLEN, MELVIN GRIEM, WERNER KIRSTEN, LEON JACOBSON, JOHN ULTMANN, ROBERT WISSLER, and STANLEY Y ACHNIN. The purpose of the Symposium was to present current advances in the area of lymphoma and leukemia to the staff and students of this medical center and to students and interested physicians from other institutions in the Chicago area. Like the other teaching symposia held in...