Objective To investigate relation between Se deficiency and superinfection of both CVB 4 and CVB 3m in mouse myocardial injury.Methods The mice (Kunming line) were divided into 4 groups on the Se contents and superinfection of Coxsackie virus B (CVB). Group1:Se deficient,without CVB; Group 2: Se rich without CVB; Group 3:, Se deficient with CVB; and Group 4: Se rich with CVB. The mice were fed with Se deficient food containing lower protein and Se was applied by adding the Se into the drinking...