You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is Confirmatory tests for Corynebacterium diphtheriae is and explain in detail?
Selective media for Corynebacterium diphtheriae is Tellurite blood agar. Several modifications of Tellurite blood agar have been utilized, such as McLeod's and Hoyle's medium. Tellurite inhibits the growth of most of the other bacteria acting as a selective agent for diphtheria bacilli. Diphtheria bacilli reduce Tellurite to metallic tellurium which is incorporated in the colonies giving them a grey or black colour. Reference: Textbook of Microbiology; Anathanarayan and panicker's; 10th edition; Page no: 242