||A condition that happens when pathogens enter the body, multiply, and cause harm
||A combination of body defenses made up of the cells tissues and organs that fight pathogens in the body.
||The body's response to injury or disease, resulting in a condition of swelling, pain, heat and redness
||A secondary circulatory system that helps the body fight pathogens and maintains its fluid balance
||Special white blood cells in the lympathatic system
||Substances that send the immune system into action.
||Proteins that attach to antigens, keeping them from harming the body.
||The ability to resist the pathogens that cause a particular disease.
||A preparation of dead or weakened pathogens that is introduced into the body to cause the immune response