CXCL8 and neoplasm: IL-8 regulates tumor growth (Mian et al., 2003); IL-8 regulates BlCa tumorigenicity (Inoue et al., 2000); IL-8 regulates metastasis formation (Inoue et al., 2000); IL-8 regulates neovascularization (Inoue et al., 2000)