This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Sex Hormones, Subject name: Physiology
[{'content': "The major contributor to semen is from - \nSelect and explain. \nA. Seminal vesicle, B. Cowper's glands, C. Prostate, D. Urethral gland", 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e.. Seminal vesicle o Seminal vesicle secretions contributes 60% of total volume of semen.o Beta-2 transferrin is an isoform of transferrin,o It is found in cerebrospinal fluid (CSF).o It is not found in other body fluids (blood, mucus, tear, saliva, urine),o Therefore, it is a specific marker for CSF and is used for diagnostic of CSF leaks.", 'role': 'assistant'}]