He injected killed virus from the spinal cords of infected rabbits into people bitten by rabid dogs, who survived by gaining immunity before they showed any symptoms.

• 他先以狂犬病毒感染兔子，再取出兔子的脊髓，杀死其中的病毒，然后注射到遭带原狗咬伤的人体内，感染者及时发展出免疫力，就不会发病了。