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: Unknown
[{'content': 'This is a schematic diagram depicting the body structure of which of these helminths? \nSelect and explain. \nA. Onchocerca volvulus, B. Brugia rnalayi, C. Loa loa, D. Wuchereria bancrofti', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. b. Brugia malayi (Ref Paniker's Parasitology 6/e p203) The microfilariae given in the question has morphology typical of Brugia malayi. In Brugia malayi, head space is twice as long as it is broad, nuclei in body appears crowded & tail tapers around to two nuclei that appears to be connected by a fine thread. Brugia malayi Brugia malayi is one of the tissue roundworm responsible for filariasis in Asia & Indian subcontinent. Life-cycle host: Definitive host: HumanQ Intermediate host: Mosquito (Mansonia, Anopheles) Q Characteristic Features: Periodicity: NocturnalQ Location of adult: Lymphatic tissueQ; Location of microfilariae: BloodQ Morphology of Brugia malayi Microfilariae Head-space is twice as long as it is broadQ Nuclei in body appears crowdedQ Sheath stains pink-red with Giemsa stain & body is closely folded in angular fashion Tail tapers around to two nuclei that appears to be connected by a fine threadQ. Diagnosis: Microscopic examination of differential morphological features of microfilariae in stained blood films can aid in diagnosisQ. Giemsa staining will uniquely stain Brugia malayi sheath pinkQ. Treatment: DOC: Diethylcarbamazine (DEC) Q.", 'role': 'assistant'}]