The ultrarapid delayed rectifier potassium current has important functional role in the repolarization reserve of canine and human ventricular muscle. - Abdelmagid AAE; Mohammed ASA; Mohácsi G; Paskuj B; Bitay G; Tomek J; Dalal S; Árpádffy-Lovas T; Demeter-Haludka V; Koncz I; Naveed M; Virág L; et al. (The Journal of physiology, 2026)