The following are multiple choice questions (with answers) about medical knowledge.   **Question:** In which of the following microvilli are not present?   (A) Gallbladder   (B) Duodenum   (C) Collecting duct   (D) Proximal convoluted tubule
['(C) Collecting duct <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Gallbladder \n (B) Duodenum \n (C) Collecting duct \n (D) Proximal convoluted tubule <> possible answers', '  In which of the following microvilli are not present? <> context@']