This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Disease of Infancy & Childhood, Subject name: Pathology
[{'content': 'Wilms tumor has the following markers positive except? \nSelect and explain. \nA. Desmin, B. Vimentin, C. TTF-1, D. Cytokeratin', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. (c) TTF-1Wilm's tumor being mixed tumor has Desmin, Vimentin and Cytokeratin positive. Thyroid transcription factor-1 (TTF-1) is a sensitive marker for pulmonary and thyroid adenocarcinomas", 'role': 'assistant'}]