Antigen-retrieval and signal detection were performed as previously described 20 (link). The following primary Abs were used: goat polyclonal anti-NKp46 (R&D Systems), mouse anti-CD56 (clone 123C3, Dako), mouse anti-CD68 (clone KP1, Dako), mouse anti-neutrophil defensins (clone D21, Leica Biosystems), mouse anti-CD16 (clone 2H7, Leica Biosystems), rabbit anti-CD32 (clone EPR6657(2), Abcam), mouse anti-CD20 (clone L26, Dako), rabbit polyclonal anti-CD3 (Dako). The following control Abs were used: mouse IgG1 (Dako), goat IgG (R&D Systems), mouse IgG2a (Abcam) and rabbit IgG (Abcam).