A 30-year-old woman complains of a nonproductive cough that has developed over the past 10 days. She reports feeling achy, and having a sore throat and headaches. X-ray of the chest demonstrates patchy bilateral interstitial infiltrates. After work-up, the patient is diagnosed with Mycoplasma pneumoniae pneumonia. Which of the following is associated with the causative organism?
一名30岁女性主诉在过去10天出现非生产性咳嗽。她自诉感到疼痛，喉咙痛和头痛。胸部x线片示双侧斑片状间质浸润。经过检查，患者被诊断为肺炎支原体肺炎。下列哪一项与致病微生物有关?
(A) Growth on buffered charcoal yeast extract media
(B) IgM cold agglutinins
(C) Phyocyanin production
(D) Polysaccharide capsule
(E) Reticulate bodies
答案解析：
逐渐出现的症状，加上弥漫性间质浸润的影像学表现，提示非典型肺炎。非典型肺炎最常由肺炎支原体、嗜肺军团菌、肺炎支原体和病毒引起;然而，IgM冷凝凝集素的产生仅见于支原体感染。
正确答案：B
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