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Immune response to syngeneic or autologous testicular cells in mice. I. Augmented delayed footpad reaction in cyclophosphamide-treated mice.

A delayed footpad reaction against syngeneic or autologous testicular cells was detected in mice of inbred C57BL/6, AKR and C3H/He strains. The reaction was only provoked to a measurable level if the immunization was preceded by treatment with cyclophosphamide (CY). Footpad reaction was strongest on day 6 after immunization and was detected in both male and female mice. It was found that the reaction was elicited not only with the immunizing antigen, but also with allogeneic or xenogeneic testicular antigen in mice immunized with syngeneic testicular cells.