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': 'Periodic acid schiff stain shows block positiveity in - \nSelect and explain. \nA. Myeloblasts, B. Lymphoblasts, C. Monoblasts, D. Megakaryoblasts', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b ' i.e., LymphoblastImpoant characteristics of Leukemic cellso Myeloblast -o Myeloperoxidase positive, Auer rod positive, Sudan Black B o Monoblast --> Nonspecific exterase positiveo Lymphoblast --> Periodic acid schiff (PAS) positive", 'role': 'assistant'}]