KLRK1 and tuberculosis: However, pretreatment of NK cells with anti-NKG2D mAbs (1 μg/ml, 20 min) could partially neutralize the TB-mediated destabilization effects with a maximal blocking efficiency of 62.7% (64.0%) after 4 h in presence of 10 μg/ml (1 μg/ml) TBs (Figure 4A).