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: Gynaecology & Obstetrics
[{'content': 'Schwangershaft protein is the other name of \nSelect and explain. \nA. HCG, B. Papp-1, C. Pregnancy specific betal 1 glycoprotein, D. Activin', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Schwangershaft Protein:\n\nIt is the other name for pregnancy specific B1 glycoprotein.\nProduced by trophoblast.\nCan be detected 18 days after ovulation.\nIts concentration rises steadily and reaches 200 mg/ml at term.\nRole-measure of placental function for fertility control.', 'role': 'assistant'}]