Abstract
Tryptic digestion of insoluble mouse tissue stoma, followed by treatment with a chelating agent, releases specific inhibitors of anti-Histocompatibility-2 cytoxic alloantisera, presumably complexes of H-2 antigenic determinants. These inhibitors may be purified by isolation from antigen-antibody complexes, and may be resolved into single antigens by further proteolysis followed by a 2nd isolation using monospecific antisera.