How does the immune system work?
A thorn pokes a tiny cut and germs sneak in. Watch eater cells, a dendritic cell, helper T cells, B cells and killer T cells team up to win the fight. Then memory cells stick around so the next fight is faster.
Transcript
How does your body fight germs? Sticky mucus traps germs. Skin is a wall. A thorn makes a cut.
Germs copy inside your cells. Alarm! The spot swells up. Eater cells gulp germs. A dendritic cell grabs a clue.
Off to a lymph node. Click! A helper T cell fits. It wakes up B cells. B cells make antibodies.
Killer T cells wake up. Racing back to the cut. Antibodies tag the germs. Killer T cells hit infected cells.
Clean up, and it heals. Memory cells stay behind. Block, eat, learn, attack, remember.
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