Exercise 4:(5 pts) Nature of an immune response Tuberculosis is a disease caused by a bacterium (koch Bacillus), which most often affects the lungs. This disease spreads from one person to another by air from one person to another. In order to study the nature of the immune response against the Koch bacillus, we made the experiment of document 1. 1- Pick out from the text: 1.1- The name of the bacteria that cause tuberculosis. 1.2- The way by which the disease spreads. 2- Indicate the shape of the nuclei (nucleus) of the lymphocytes injected to the mouse C. 3- Analyze the obtained results. 4- Conclude the nature of the immune response agains of mouse A Injection of Koch Bacillus Survives Document 1 Page 2 of 2 ​