This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Lymphoid tissue & Integumentary system, Subject name: Anatomy
[{'content': 'All of the following organs have no lymphatic capillaries EXCEPT : \nSelect and explain. \nA. Eyeball, B. Liver, C. Spinal cord, D. Brain', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Lymph capillaries are present in most tissues of the body. Absent in: Avascular tissues (e.g. the cornea, epidermis, hair, nails, cailage) Bone and bone marrow Placenta Eyeball, inner ear Striated muscles and tendons. Thymus, spleen Teeth Central or peripheral nervous system Note: Unlike nodes, the palatine tonsils do not possess afferent lymphatics or lymph sinuses.', 'role': 'assistant'}]