لینک پرداخت و دانلود در "پایین مطلب" فرمت فایل: word (قابل ویرایش و آماده پرینت) تعداد صفحات :10 What is TB? Tuberculosis (TB) is an infectious disease caused by a germ called the tubercle bacillus. Tuberculosis is contagious - anyone can catch it. Some people are more at risk of catching TB than others. The TB germ enters your body as you breathe. It usually settles in your lungs. From there, it can spread to other parts of your body, including your central nervous system, your bones, a ...