CXCL1 and cancer: As shown in Supplementary Fig. 8, fibrocytes secrete only IL23 and IFNγ, which were suppressed upon co-culture, whereas cancer cells or fibrocytes secrete CCL5, IL-1ra, CD54, CXCL10, MIF, CXCL1, IL-6, and IL-8, which was not affected by co-culture.