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Figure 3 The proportion of activated T cells (CD3⁺/DR⁺) was similar in unstable and stable angina groups on admission (sample 1), but was transiently and significantly increased at sample 2 in group A and not in group B (p < 0.0001). Group A1 (favorable outcome) showed a more dramatic transient increase in activated T cells than group A2 (less favorable outcome): they were 6 (2 to 8) % in sample 1, increased up to 20 (7 to 31) % at sample 2 (p < 0.0001) and returned to 5 (2 to 15) % at sample 3 (p < 0.0001 vs. sample 2, p = NS vs. sample 1). No time variation was detectable in controls. The x-axis represents the time of sampling: 1 = admission; 2 = after 7 to 15 days; 3 = after 6 months; A1 = resolving UA, n = 19; A2 = refractory UA, n = 16; B1 = stable angina, Canadian class I to II, n = 20; B2 = stable angina, Canadian class III to IV, n = 15.