CD8A and duodenitis: The median number of CD8+ cells in the duodenal biopsies of SS/HTLV-1 patients was greater than for the two control groups (SS/HTLV-1: 20.3 [IQR: 18.3–22.4]; chronic duodenitis controls: 8.5 [IQR: 9–12]; healthy controls: 12.7 [IQR: 12.5–12.9, Mann-Whitney p = 0.04 comparing SS/HTLV-1 to duodenitis controls, Fig 2A and 2B).