IMMUNOLOGICAL CHARACTERIZATION OF HEMOPOIETIC CELLS IN THE COMMON MARMOSET, RHESUS MONKEY, AND MAN IN SEARCH OF A MODEL FOR HUMAN MARROW TRANSPLANTATION

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Abstract
Bone marrow, lymphoid, and peripheral blood cells from the common marmoset and rhesus monkey have been tested with a panel of heterologous and monoclonal antibodies, and their reactivity pattern has been compared with that of blood and bone marrow cells from human donors. Conventional antibodies reveal extensive cross-reactivity within the B cell, T cell, and granulocytic systems in all three species, however, some important differences have been exposed. Only the monoclonal antibodies to HLA-A,B,C and Ia-like antigens react with marmoset cells, and we have exploited this finding to show that the vast majority of colony-forming units (CFU-c) in the marmoset bone marrow (as in man) are Ia positive. The use of the common marmoset as a suitable model for human bone marrow transplantation is discussed in the light of these findings.