Immunophenotyping of TCRBV 17⁺ CD4⁺ T lymphocytes from LTNP-100149. Flow cytometry histograms, all gated on CD3⁺CD4⁺ TCRBV 17⁺ lymphocytes, showing coexpression of CCR5 and CTL markers on cells in fresh peripheral blood. Results are representative from at least 3 visits over 9 months. Percentages are of gated populations, as indicated.