[Delayed hypersensitivity to the antigens of the herpes simplex virus and herpetic resistance induced in mice by the administration of xenogeneic lymphocytic ultrafiltrates].

Experiments on mice have shown that ultrafiltrates, prepared from lymphocytes obtained from the spleen of horses immunized with herpes vaccine and from human tonsils, contain herpes-specific transfer factor inducing delayed hypersensitivity. The antiherpetic resistance of mice has been found to achieve its maximum if herpes simplex antigens are introduced after the injection of the preparation of transfer factor.