Viruses - MsVachonsScienceSpace
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Transcript Viruses - MsVachonsScienceSpace
Virus Attack
Ms Vachon
A simple sneeze…
VIDEO
…Can lead to this:
Virus invades cell
Your Body’s Lines of Defense
Interferon
White Blood Cells (your “fighters”)
Interferon
White Blood Cell vs Bacteria
Some white blood cells release antigens
How Antigens stop viruses
First Line of Defense
INTERFERON
Chemical released by the first cell
attacked
Warns other cells
Calls in the big boys…
Second Line of Defense (your
fighters)
White Blood Cells
Attack and destroy invaders (typically
viruses/bacteria)
Also called “leukocytes”
Made in your
bone marrow
Your Fighter’s Ammo
Some white blood cells make antibodies
These antibodies bind with and change the
shape of the “keys” on the outside of viruses
This way, they can’t enter a cell
How Can You Keep Your
Immune System Strong?
Your immune system is constantly working
Doctors recommend
The immune response is complex.
Proper fuel
Proper training (exercise)
THIS YEAR
2013 Flu Season