For this we measured IL-6, IL-8 and IP-10 (which are elevated in active TB), as well as sIL-2Rα, sICAM-1, sTNFR-1, sTNFR-2 and CRP (which correlate with the extent of disease in TB) [21] in plasma of TB patients and healthy controls (Table 3). Here, CRP is linked to tuberculosis.