Live primary human monocytes stimulated with CSN1S1. Primary human monocytes were incubated with CSN1S1 for 24 h with increasing CSN1S1 concentrations in comparison to medium control and 200 ng/ml LPS. Living cells were photographed at 400× magnification. Cells developed irregular cytoplasm (arrow) and pseudopodia (arrow-head). Representative pictures of 10 experiments.