system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
CD 34 is a tumor marker used for-
assistant
The correct answer is  Harshmohan textbook of pathology 7th edition. CD 34 is an immunohistochemical stain for sarcoma i;e, endothelial marker. S100 is the immunohistochemical stain for Ewings sarcoma..