It would be their immune system.
immune system
the integumentary system is the skin and the bodys first line of defense.
Neutrophils
The adaptive or specific defense mechanisms: lymphocytes, antibodies, and macrophages.
its killer T cells
axons neurons , cells help protect the bodys defense system against infection ..auto-immune defiency ...also oxygen
Cardiovascular
This is your bodys natural defense to protect the eyes. It is a reflex.
Circulatory system
yes
I believe the bodies transportion system is the cardiovascular system :)
Barriers, The Inflammation Process, and Antibodies.
Lysozymes