IL1B and tuberculosis: The percentage of IL-1b-positive hMDMs was borderline significantly less in active TB patients than in LTBI cases after ESAT-6 1 μg/ml (14.0 ± 11.2% vs. 31.6 ± 22.5%, P = 0.065) and 5 μg/ml (2.0 ± 2.4% vs. 26.5 ± 29.6%, P = 0.064) stimulation for 24 hours.