
Keywords: ایمونوسیتوشیمی; EFS; electrical field stimulation; FOV; field of view; LTCC; L-type Ca2+ channel; NCX; Na+/Ca2+ exchanger; PSS; physiological salt solution; SR; sarcoplasmic reticulum; ROI; region of interest; RyR; ryanodine receptor; Pulmonary vein; Pulmonary vein cardi