IL2 and tuberculosis: Interestingly, among those four Picostim/IL2-treated macaques that did not show any gross lung TB lesions at necropsy, three macaques(IDs:8022, 8014,8013) did not exhibit any detectable microscopic TB granulomas in the lung tissue sections derived from right caudal and other lung lobes despite that we employed digital microscopic scanning for extensive analyses (Fig. 3b, Fig. S2 in Text S1).