This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology and Reproduction, Subject name: Physiology
[{'content': 'Which of the following act through tyrosine kinase receptor \nSelect and explain. \nA. Insulin, B. Glucagon, C. GH, D. FSH', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. (a) Insulin(Ref: Ganong, 25th ed/p.52)Tyrosine kinase receptors serves as receptors for,#Insulin#Insulin like growth factors (IGF -1)#Epidermal growth factor (EGF)#Nerve growth factor#Platelet-derived growth factor#Fibroblast growth factor', 'role': 'assistant'}]