Within 2-10 weeks, the immune system produces special immune cells called macrophages that surround the tubercle bacilli. The cells form a hard shell that keeps the bacilli contained and under control (TB infection)
CDC - Department of Health and Human Services. Core Curriculum on Tuberculosis: What the Clinician Should Know. Chapter 2: Transmission and Pathogenesis of TB. September 28, 2011. Powerpoint file.
