CXCL8 and lip and oral cavity carcinoma: The bead-based array revealed that several growth factors (VEGF, HCF, Ang-2, TGF-α, EPO, SCF, FGF, and PDGF-BB) and pro-inflammatory cytokines (TNF-α and CXCL8) could be major contributing factors in the propagation of oral cancer cells owing to their higher levels compared to other factors in the secretome.