CALCA and infection: On Day 2 after infection, monocyte chemoattractant MCP-1 and neutrophil attractant KC increased dramatically; however, in the B6/lpr mice, their concentrations were much higher (503.5 ± 155.9 vs. 1571 ± 183; 638.5 ± 340.3 vs. 3320 ± 428.4) (Figures 3(b) and 3(c)).