Hello, welcome to Wshin128’s presentation about vaccines

1. Hello, welcome to Wshin128’s presentation about vaccines Made for NOW YOU KNOW http://nowyouknoww.wikispaces.com

2. The first topic of discussion is, How they work, Vaccines inject a very small portion of the virus that you want to be protected against. Your immune system (see slide 2) then creates antibodies to get rid of the virus. That way, the next time you really get the virus, your immune system is prepared for it.

3. Your Immune System (1) The main cells of your immune system are, • Macrophages • Helper T Cells • B Cells • Killer T Cells • Suppressor Cells • And Memory T Cells

4. Your immune system (2) When a virus first enters your body the Macrophages wrap themselves around the bacteria and kills it. A lot of bad cells die right there on the spot. Then, the Helper T cells come in and signal for the B Cells to arrive.The B Cells then send out plasma to bring the Killer T Cells into action. They then give the Killer T Cells some antibodies to fight off the bad cells.

5. Your Immune System (3) After all the fighting, the Suppresser T Cells signal for the Killer T Cells to stop. Then the Memory T Cells kick in and remember the virus so the next time it comes knocking on the door, they know what to do with it.

6. What happens during all of this activity When all of your cells are working hard to fight the virus, your body may acquire a fever, which seems to speed up Macrophages and slow down the virus.

7. Your body’s defense system Whenever you get a cut, you notice that it gets a scab and heals on it’s own. Whenever you get stung by a bee, you might see a bump on the surface of your skin. That is your white blood cells coming to eat up the small amount of poison left under your skin from the bee.

8. You can see, your body can heal on its own and even ward off infections and viruses too. Now you know!