This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pathology
[{'content': 'In an ablated animal, myeloid series cells are injected. Which of following is seen after incubation period \nSelect and explain. \nA. RBCs, B. Fibroblasts, C. T lymphocytes, D. Hematopoetic stem cells', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. a. RBCs', 'role': 'assistant'}]