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Changes in peripheral blood lymphocyte (PBL) phytohaemagglutinin (PHA)-induced apoptosis at baseline, 4–6 weeks and 8–12 weeks of anti-retroviral therapy (ART). Changes in percentage of PBL undergoing apoptosis following 72 h PHA stimulation are shown in relation to time on ART. Median results with 10th and 90th centiles for 11 patients compared with seven risk-matched controls (RMC) are represented by the boxes, the whiskers representing the ranges.
