This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Microbiology
[{'content': 'Best culture for primary isolation of H. influenzae? \nSelect and explain. \nA. Blood agar, B. Fildes agar, C. Nutrient broth, D. Tryptose agar', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Fildes agarH. influenzae does not grow on blood agar.Culture media used for isolation are Fildes agar (best for primary isolation), Levinthal medium (capsulated strains show iridescence) and Chocolate agar.", 'role': 'assistant'}]