Figure 3
The response of intracellular Ca2+levels after ATP stimulation with or without receptor antagonists (PPADS, suramin). A: The representative response curves of intracellular calcium level after ATP treatment. B: The representative fluorescence changes of intracellular Ca2+ obtained under inverted fluorescence microscopy. C: ATP induced a response of intracellular calcium level in dose dependent manner, and the receptor antagonists (PPADS, suramin) reduced the response after ATP treatment.