Table 1.

Competition for [³H]dofetilide binding in HL-1 cells and guinea pig myocytes

Drug	HL-1 cells			Cardiac myocytes*
	N	Kd, μM	SEM, μM	N	Kd, μM	SEM, μM
Dofetilide	4	0.042	0.02	13	0.10	0.03
Clofilium	3	0.830	0.43	5	1.29	0.32
Azimilide	6	0.800	0.14

^*Values for dofetilide and clofilium obtained in guinea pig ventricular myocytes (16).