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Cayman Chemical DIphthRIa ToxIn CRM197 mutn
Supplier: Cayman Chemical 23218250 UG
An inactive diphtheria toxin; contains a single base change in the structural gene resulting in the substitution of glutamic acid for glycine which blocks ADP-ribosylation; has no enzymatic activity but is immunologically indistinguishable from diphtheria toxin
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