High expression of the ligands of Cxcr2, such as Cxcl1, Cxcl2, Cxcl3, and Cxcl5, was observed mainly in tumor cells, fibroblasts, chondrocytes, pericytes and osteoclasts among APM‐naïve cells (Figure S7E, Supporting Information). The gene discussed is CXCR2; the disease is neoplasm.