Abstract: A stable xenogeneic fusion partner that is a product of the fusion of a mouse myeloma cell and a non-transformed rabbit partner cell. The fusion partner produces undetectable levels of antibody, as determined by an enzyme linked immunosorbent assay. A method for generating rabbit monoclonal antibodies is disclosed that comprises fusing a nontransformed rabbit partner cell with a rodent myeloma cell to produce a xenogeneic fusion partner, selecting a stable fusion partner producing undetectable levels of antibodies, fusing the stable fusion partner with a rabbit antibody producing cell and isolating an antibody producing cell line that produces antibodies directed to a predetermined antigen.