CXCL10 and tuberculosis: However, the mitogen specific IP-10 responses were lower among the active TB cases that were HIV positive 5,349.2 pg/ml (-1,867.2–12,565.6) compared to those that were HIV negative 7,735.4 pg/ml (6,462.6–9,008.2) (Mann-Whitney U test, p = 0.05).