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Effect of KB-R7943 and BaCl2 on arrhythmias. A, Recordings of cell contractions in response to different shock strengths and experimental treatment. B and C, Arrhythmia duration, number of beats, and their average cycle length measured during 5-sec interval in 12 cell strands in control, during KB-R7943 application, and after drug washout. C, Respective parameters measured in 8 cell strands in control, during BaCl2 application, and after drug washout.
