Corynebacterium diphtheriae toxin Ab^2nd specimen:ACnc:Pt:Ser:Qn
corynebacterium diphtheriae toxin ab^2nd specimen:acnc:pt:ser:qn
Corynebacterium diphtheriae toxin Ab^2nd specimen:ACnc:Pt:Ser:Qn
corynebacterium diphtheriae toxin ab^2nd specimen:acnc:pt:ser:qn