In contrast, bladder cancer cells (70), melanoma cells (71), breast cancer cells (72, 73), lung cancer cells (74), pancreatic cancer (75), non-small cell lung cancer (76), cervical cancer cells (77), medulloblastoma cells (78), glioma cells (79) and ovarian cancer cell lines (80) also show varying levels of CD73 expression. Here, NT5E is linked to lung cancer.