Pg.+134

Pg. 134, Q's 1-3
1. A few ways your body defends itself against pathogens are from your eyes, nose, skin, and mouth. 2. A few different cells in the immune system are macrophage, T cells, B cells, and antibodies. Macrophage eat any microorganisms or viruses floating around, T cells play an important role in coordinating the immune system, while many of the B cells make antibodies, which are proteins attached to specific pathogens. Antibodies usually attach to only one type of pathogen, but your body can make millions of different types of antibodies. 3. Your body cannot make antibodies if you have never come on contact with a disease. This is because when you get a disease and your body reconizes it, your body will automatically just know to fight it off. If you have never had the disease before, though, your body will take longer in the process of healing itself.