
Keywords: EMT; epithelial mesenchymal transition; qRT-PCR; quantitative real time polymerase chain reaction; CXCL12; C-X-C motif chemokine ligand 12; CXCR4; C-X-C chemokine receptor type 4; CK7; cytokeratin-7; CDH1; E-cadherin; CLDN4; claudin-4; HIF-1A; hypoxia ind