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: Pharmacology
[{'content': 'Dose-response curve in Hormesis ? \nSelect and explain. \nA. Straight line, B. Sigmoid, C. Inveed U or J shaped, D. Hyperbola', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Inveed U or J shaped Hormesis is a dose response phenomenon in which low doses have stimulatory effect while high doses have inhibitory effect. The dose response curve may be J-shaped or inveed U shapted, the latter being observed, for example, with the effect of chemotactic peptides on neutrophil adhesion.", 'role': 'assistant'}]