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Figure 2 Alignment of nucleotide sequences of enterovirus polymerase chain reaction products derived from the myocardium of patients with idiopathic dilated cardiomyopathy (Patients No. 1, 2, 3, 6 and 7; see Table 1). Published sequences of coxsackievirus B3 (strain Nancy), coxsackievirus B3 (clinical isolate) and coxsackievirus B4 (strain J.V.B.) are shown in full, and any differences between these are indicated below by the presence of that base. A = adenine; C = cytocine; G = guanine; T = thymine; CVB3 = coxsackievirus B3 (strain Nancy); CVB4 = coxsackievirus B4 (strain J.V.B.); wCVB3 = coxsackievirus B3 (clinical isolate).