Different Pattern of ATP‐mediated Increases in [Ca 2+ ] cyt Contributes to ATP‐induced Increase in Bcl‐2/Bax Ratio in Lung Cancer Cells But Not in Normal Control Cells

ATP (extracellular messenger) is in much higher concentration in tumor microenvironment. It regulates cell functions through acting on purinergic receptors to activate a series of intracellular sig...