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6347 Microbiology

In a completely and adequately immunized child against diphtheria, the throat swab was collected. It showed the presence of C.diphtheriae organisms on Albert staining. These organisms can have one of the following properties on further processing:

AIt can grow on potassium tellurite media
BIt would show +ve Elek’s gel precipitation test
CIt can be pathogenic to experimental guinea pig
DIt can produce cytotoxicity in tissue culture
Microbiology
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