In a completely and adequately immunized child against Diphtheria, the throat swab was collected. It showed the presence of Corynaebacterium diphtheriae like organisms on Albert staining. These orgainisms can have one of the following properties on further laboratory processing -
It can grow on Potassium tellurite medium It would show a positive Elek's gel precipitation test It can be pathogenic to experimental guinea pigs It can produce cytotoxicity in tissue cultures