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Effect of extracellular ATP on [Ca2+]i and CBF enhancement. Representative experiment of time course responses of [Ca2+]i (A) and CBF enhancement (B) to 100 μM ATP in porcine tracheal tissue cultures. [Ca2+]i and CBF were sampled from the same cell every second, but only each third data point is displayed for purposes of clarity. A representative of 10 similar experiments is shown.
