The Journal of Experimental Medicine, Vol 131, 603-610,
Copyright © 1970 by The Rockefeller University Press
IN VITRO STUDIES OF THE SUPPRESSION OF DELAYED HYPERSENSITIVITY BY THE INDUCTION OF PARTIAL TOLERANCE
Yves Borel M.D.1 and
John R. David M.D.1
1 From the Clinical Immunology Service, New England Medical Center Hospitals, Department of Medicine, Tufts University School of Medicine, Boston, Massachusetts 02111, and the Department of Medicine, Harvard Medical School, Boston, Massachusetts 02115, and the Robert Breck Brigham Hospital, Boston, Massachusetts 02111
Suppression of delayed hypersensitivity in vivo is correlated in vitro with the absence of macrophage migration inhibition in the presence of the antigen used to induce partial tolerance. The suppression of delayed hypersensitivity is antigen-specific in vivo as well as in vitro. The lymphocytes, and not the macrophages, are the cells involved in the induction of tolerance in terms of delayed hypersensitivity which is characterized by an absence of migratory factor activity.
Submitted on October 10, 1969