This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Immunity, Subject name: Pathology
[{'content': 'CD8 is a marker for which of the following cell? \nSelect and explain. \nA. T-cell, B. B-cell, C. NK-cells, D. Macrophages', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., T-cells Important cells with their CD marker are* Primary T cell Associated* CD1, CD3, CD4, CD5, CD8* Primary B cell associated* CD10, CD19, CD20, CD21, CD23, CD79a* Primary monocyte or macrophage associated* CD11c. CD13, CD14, CD15, CD33, CD64* Primary NK cell associated* CD16.CD56* Primary stem cell and progenitor cell associated* CD34* Activation markers* CD30* Present on all leukocytes* CD45", 'role': 'assistant'}]