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How Your Immune System Actually Works
Almost everything you call being sick is your own defense switching on.
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Fever
A fever is a temporary rise in body temperature caused by the brain resetting its internal thermostat to a higher target.
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Inflammation
Inflammation is your body's emergency biological defense against injuries, infections, and damaged tissue.
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Adaptive immune system
The adaptive immune system is the specialized part of your body's defenses that learns to recognize and destroy specific pathogens.
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Antibody
An antibody is a specialized protein produced by immune cells to identify and latch onto foreign invaders like viruses and bacteria.
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Memory B cell
A memory B cell is a long-lived white blood cell that remembers the exact molecular shape of an invader you have fought before.
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Vaccination
Vaccines train the immune system with weakened pathogens or proteins to build lasting defense against deadly infectious diseases.
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Mast cell
Mast cells are resident white blood cells packed with histamine granules, defending against pathogens while driving allergic reactions.
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Autoimmunity
Autoimmunity is a state where an organism's immune defenses mistakenly target and attack its own healthy cells and tissues.