Experimental Hematology Today-1985 is a memento to the superb 14th Annual Meeting of the International Society for Experimental Hematology, held in Jerusa lem, Israel in July 1985. It represents a selection of the best presentations at the meeting. The manuscripts were selected by the local scientific committee and care fully reviewed by the editors. The yearbook is divided into five parts and represents the most recent advances in the basic sciences and clinical applications. Part I, under the leadership of Dr. L.A. Rozenszajn, is entitled "Hematopoietic Regulators." Papers in this section discuss the most recent discoveries on the phys iological regulation of hematopoiesis. Part II, "Hematopoietic Microenvironment," introduced by Dr. J.S. Greenberger, deals with the involvement ofthe hematopoietic microenvironment in the control of hematopoiesis. Dr. M. Saito leads Part Ill, "Dif ferentiation of Normal and Leukemic Cells," while Part IV, "Leukemic Cells in Leukemogenesis," is introduced by Dr. A. Raghavacher. The important discussions on recent advances in "Bone Marrow Transplantation," Part V, are headed by Dr. M.M. Bortin. Recent findings in many disciplines in experimental and clinical hematology are presented in this yearbook. It should be of considerable value to experimental and clinical scientists. The Editors v Contents Part I. Hematopoietic Regulators L.A. Rozenszajn 1. Role of T-Lymphocyte Colony Enhancing Factor, TLCEF, in the Induction of CFU -TL L.A. Rozenszajn, 1. Goldman, H. Poran, M.M. Werber, D. Shoham, and 1. Radnay ...