system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
A 45-year-old man comes to the physician because of a 1-month history of fever and poor appetite. Five weeks ago, he underwent molar extraction for dental caries. His temperature is 38°C (100.4°F). Cardiac examination shows a grade 2/6 holosystolic murmur heard best at the apex. A blood culture shows gram-positive, catalase-negative cocci. Transesophageal echocardiography shows a small vegetation on the mitral valve with mild regurgitation. The causal organism most likely has which of the following characteristics?
assistant
Production of dextrans