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immune system
The immune system must attack the bodys own cells
the body system dies and you will eventually die too
its killer T cells
axons neurons , cells help protect the bodys defense system against infection ..auto-immune defiency ...also oxygen
yes it can because it is a bacteria, the bodys immune system automatically starts producing more white cells to fight off the bacteria
Cardiovascular
When sleeping the body's circulatory system begins to slow down. It is easier for the blood to circulate throughout the body.
"Immunological system" is just a fancy way to say "immune system".
Circulatory system
yes
I believe the bodies transportion system is the cardiovascular system :)