The immune system. Using the following file , read and answer the following questions on the lymphatic sysytem'

1What is the immune system? Instead of being an organ, what function do the cells and proteins of the system perform?

2. How is your immune system organized and developed?

3. What are the different cells of the immune system? What is their function?

4. How do lymphocytes(B-cells and T-cells) defend against foreign antibodies and pathogens?

5. What are some examples of how the immune system fights infections?

Bonus (you can use the internetjust site your sources)