Bone marrow origin of complement‐receptor lymphocytes

摘要

AbstractSubstantial regeneration of complement‐receptor lymphocytes (CRL) took place in lymph nodes of adult thymectomized whole‐body X‐irradiated mice reconstituted with semi‐allogeneic (F1) bone marrow. In the presence of complement, alloantisera directed against the transplanted bone marrow killed more than 95% of the lymphoid cells of such chimeras. Moreover, lymph node cell suspensions and lymphoid tissue sections of neonatally thymectomized or adult thymectomized, irradiated and marrow‐grafted mice contained an increased proportion of CRL. The results concur to establish proof that CRL are of extrathymic, bone marr