CXCL12 and infection: 4T1 cell infection with SFV downregulated the amount of GM-CSF, IL-4, IL-10, IL-16, CCL1, CCL3, CCL11, CCL17, CCL19, CCL22, CCL27, CX3CL1, CXCL5 and CXCL12 quantified in 4T1 CM (p  < 0.05, Figure 2).