Balb/c mice are inoculated with different dilution of coxsackie virus B 3m to obtain an optimum does for screening anti myocarditic drugs by observing some obvious virus markers.

• 通过柯萨奇B3m病毒（CVB3m）接种Balb/c鼠浓度的研究，探索其与CVB3m的LD50、血清抗体、病毒分离和脏器病理变化之间的关系，以获得产生明确病毒标志的最合适病毒接种浓度来筛选抗病毒性心肌炎药物。