Sotalol ( 1.6×10~ ( - 6 ) to 1.6×10~ ( - 4 ) M ) and meto - prolol ( 1.2×10~ ( - 7 ) to 1.2×10~ ( - 4 ) M ) had no effect on SAN , AVN , atrial and His - bun - dle cell APA and (? ) max .
Sot ( 1.6×10 ~ ( -6 ) — 1.6×10~ ( -4 ) M ) 对上述4种细胞的动作电位振幅和0相最大除极速度皆无影响.
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