tokens: Similar results were obtained when mutants of SIVmacMER ( a macrophage-competent derivative of SIVmac239 ) were tested in peripheral blood mononuclear cell and CEMx174 cultures .
folded_tokens: similar results were obtained when mutants of sivmacmer ( a macrophage-competent derivative of sivmac239 ) were tested in peripheral blood mononuclear cell and cemx174 cultures .
labels: O O O O O O O B-virus O O O O O B-virus O O O O B-cell_type I-cell_type I-cell_type I-cell_type O B-cell_line I-cell_line O