FR Machado, C Pagliari, H Caiafa, R Tapajós and MIS Duarte (2006). Immunopathology of the duodenal mucosa of HIV-positive patients during combined antiretroviral therapy. Brazilian Journal of Medical and Biological Research, 39: 107-117.  

Figure 4. Comparison of mucosal CD45RO+ T lymphocyte (TL) count between mucosal p24-positive (N = 6) and -negative patients (N = 28). Mann-Whitney: P = 0.03. Only individuals from groups 2 and 3 were analyzed. The boxplots show the minimum/maximum value, 1st and 3rd quartiles and median.