TLR4 and tuberculosis: At all three treatment time points in TB patients, the expression of TLR4 (M1, p = 0.0019; M2, p<0.0001; M3, p<0.0001) and the co-expression of TLR2/4 (M1, p = 0.0006; M2, p<0.0001; M3, p<0.0001) on lymphocyte cell surfaces were significantly higher than in the controls and tended to increase during treatment.