German scientists said on Thursday that work on mice showed that tattooing was a more effective way to deliver a new generation of experimental DNA vaccines than standard injections into muscle.

• 周四，德国的科学家宣称，在老鼠身上的实验表明，纹身与普通的肌肉注射相比，纹身是一种产生新一代的试验DNA疫苗更有效的方法。