we examined the possible role of altered humoral immunity by comparing the effect of sera from patients with idiopathic dilated cardiomyopathy ( n = 20 ) , ischemic or valvular heart disease ( n = 28 ) , or controls with no known cardiac disease ( n = 18 ) on the binding of radioligands to cardiac beta-receptors .
C0018824
valvular heart disease
C0018787
cardiac