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Table 1 Electrophysiological characterization of action potentials recorded from isolated cells.

From: Subtype-specific differentiation of cardiac pacemaker cell clusters from human induced pluripotent stem cells

Action potentials (n = 41)

Interval (ms)

MDP (mV)

Peak (mV)

Amp (mV)

dV/dtmax (mV)

APD30 (ms)

APD40 (ms)

APD70 (ms)

APD80 (ms)

APD30-40/ APD70-80

Central SAN-like (n = 21)

400.0 ± 6.9

–40.4 ± 4.2

7.3 ± 0.9

47.8 ± 3.5

1.0 ± 0.1

139.0 ± 9.7

162.3 ± 11.1

173.7 ± 11.9

196.3 ± 13.4

1.0 ± 0.1

Atrial-like (n = 15)

476.6 ± 22.3

–77.2 ± 1.2

22.2 ± 1.3

99.4 ± 0.7

27.7 ± 1.1

77.4 ± 1.7

89.3 ± 2.0

107.2 ± 2.4

131.0 ± 2.9

1.1 ± 0.2

Peripheral SAN-like (n = 5)

406.4 ± 7.9

–79.4 ± 22.2

27.5 ± 3.0

106.9 ± 2.2

4.9 ± 0.4

71.3 ± 3.5

83.7 ± 3.9

100.5 ± 4.7

112.1 ± 2.9

1.1 ± 0.1

  1. Data are provided as means ± SEM
  2. Amp amplitude, APD AP duration, dV/dt max maximal rate of depolarization, Interval beating rate interval, MDP maximum diastolic potential, Peak peak voltage, SAN sinoatrial node