]> 2026-07-31T09:38:59+00:00 WBR0045 0 en Pili undergo antigenic variation Cell wall that contains high sterol content Acid fast bacilli Positive silver stain Presence of cell membrane with increased osmotic fragility Microbiology A 25-year-old woman presents to her primary care physician with complaints of worsening dyspnea, dry cough, and myalgia for the past 8 days. Her past medical history is significant for migraines, for which she occasionally takes over-the-counter NSAIDs. She denies smoking, drinking alcohol, or illicit drug use. She has no known allergies. Her blood pressure is 116/82 mmHg, heart rate is 72/min, temperature is 101 °F (38.3 °C), and respiratory rate is 24/min. Physical examination is remarkable for diffuse crackles over both lung fields. Chest xray shows bilateral bronchial wall thickening and centrilobular nodules. Which of the following is a characteristic finding of the organism responsible for this patient's symptoms? E Pulmonology 2020-10-27T23:09:09Z 2459150.4646875 WBR0045