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: Microbiology
[{'content': 'Rapid diagnostic test for gram negative bacterial Meningitis is \nSelect and explain. \nA. CSF - Latex agglutination, B. Nasopharyngeal swab culture, C. CSF - Culture, D. Limulus amebocyte lysate assay', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Limulus amebocyte lysate reacts with bacterial endotoxin lipopolysaccharide, which is a membrane component of gram - negative bacteria.', 'role': 'assistant'}]