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': 'The following is not a feature of malignant transformation by cultured cells - \nSelect and explain. \nA. Increased cell density, B. Increased requirement for growth factors, C. Alterations of cytoskeletal structures, D. Loss of anchorage', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Cultured cells undergoing malignant transformation do not show increased requirement of growth factors. On the contrary they lose the requirement of growth factors.', 'role': 'assistant'}]