This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cornea, Subject name: Ophthalmology
[{'content': 'Limbus stem cells are situated in: \nSelect and explain. \nA. Corneal stroma, B. Ciliary body, C. Fornices, D. Palisades of Vogt', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Limbus stem cells are seen in Palisade of Vogt. LIMBUS STEM CELL (LSC) Function: Maintain transparency of cornea & Corneal epithelium regeneration. Sign of deficiency Conjunctivalization of cornea. Persistent epithelial defect. Irregular staining. Marker: ABCG 2. OSTEO ODONTO KERATOPROSTHESIS', 'role': 'assistant'}]