Which one of the following shows if a clinical isolate of Corynebacterium diphtheriae is toxigenic?
a. Bacterial agglutination with specific antisera
b. Colonial morphology on blood tellurite medium
c. Positive Elek plate
d. Positive identification of “gravis” strain
e. Positive Schick test.
Karishma_Khanna Answered question July 27, 2022
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