This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Haematology, Subject name: Pathology
[{'content': 'Which of the following surface glycoproteins is most often expressed in human hematopotetic stem cell? \nSelect and explain. \nA. CD22, B. CD4D, C. CD15, D. CD34', 'role': 'user'}, {'content': 'Answer: D \nExplanation: HSC express a variety of cell surface proteins such as CD34 and adhesion proteins which helps cells to home to the bonemarrow when infused Reference : Harsh Mohan textbook of pathology, 7th edition.Pg no.262', 'role': 'assistant'}]