This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Infections of the genital tract, Subject name: Gynaecology & Obstetrics
[{'content': 'A 45-year-old female complains of lower abdominal pain and vaginal discharge. On examination, there is cervicitis along with a mucopurulent cervical discharge. The Gram smear of the discharge shows presence of abundant pus cells, but no bacteria.The best approach to isolate the possible causative agent would be : \nSelect and explain. \nA. Culture on chocholate agar supplemented with hemin, B. Culture on McCoy cells, C. Culture on a bilayer human blood agar, D. Culture on Vero cell lines', 'role': 'user'}, {'content': "Answer: B \nExplanation: Chlamydial infection Presenting symptoms: dysuria,dysparenuia,postcoital bleeding,intermenstrual bleeding Findings: mucopurulent cervical discharge,cervical edema,cervical ectopy,cervical friability McCoy cell monolayers are used for tissue culture due to its 100% specificity. It takes 3-7 days to obtain result. D.C.DUTTA'S TEXTBOOK OF GYNAECOLOGY,Pg no;150,6th edition", 'role': 'assistant'}]