The other major subpopulation expressing the CD4 receptor , namely , the double-positive ( DP ) CD4 ( + ) CD8 ( + ) CD3 ( +/- ) thymocytes , despite the entry of the virus , do not produce a significant level of virus , presumably because they are unresponsive to TNF and IL-7 .
the other major subpopulation expressing the cd4 receptor , namely , the double-positive ( dp ) cd4 ( + ) cd8 ( + ) cd3 ( +/- ) thymocytes , despite the entry of the virus , do not produce a significant level of virus , presumably because they are unresponsive to tnf and il-7 .
O O O O O O B-protein_molecule O O O O O B-cell_type I-cell_type I-cell_type I-cell_type B-protein_molecule O O O O O O O B-protein_molecule O O O O O O O O O O O O O O O O O O O O O O O O O O O B-protein_family_or_group O B-protein_molecule O