The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Odontoblasts are derived from ____________   (A) Undifferentiated mesenchymal cells   (B) Histocytes   (C) Macrophages   (D) Lymphocytes
['(A) Undifferentiated mesenchymal cells <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Undifferentiated mesenchymal cells \n (B) Histocytes \n (C) Macrophages \n (D) Lymphocytes <> possible answers', '  Odontoblasts are derived from ____________ <> context@']