This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Bacteria, Subject name: Microbiology
[{'content': 'Growth of C diphtheriae in Tellurite agar occurs in - \nSelect and explain. \nA. 2-4 hours, B. 4-8 hours, C. 8-12 hours, D. 1-2 days', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., 1-2 days * The usual media employed for cultivation of diphtheria bacillus are:-1) Loeffler's serum slope# It is used for rapid diagnosis as growth is shown within 4-8 hours.2) Tellurite blood agar (Tinsdale medium)# It acts as selective media, as tellurite inhibits growth of most other bacteria.# Growth may take two days to appear.", 'role': 'assistant'}]