Ca2+ wave probability is determined by the balance between SERCA2-dependent Ca2+ reuptake and threshold SR Ca2+ content. - Stokke, Mathis K.; Briston, Sarah J.; Jølle, Guro F.; Manzoor, Isma; Louch, William E.; Øyehaug, Leiv; Christensen, Geir; Eisner, David A.; Trafford, Andrew W.; Sejersted, Ole M.; Sjaastad, Ivar (Cardiovascular Research, 2011)