Approximately 11–18% of CCR5 in human adenocarcinoma cells, 90–95% of CD4 in H9 leukemic T cells, and 50–66% of CD4 in peripheral blood mononuclear cells (PBMCs) are detected in membrane rafts [79, 80], whereas CXCR4 is almost entirely absent in membrane rafts of human embryonic kidney 293T cells, H9 leukemic T cells and PBMCs [39, 80]. This evidence concerns the gene CD4 and adenocarcinoma.