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🛡️
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✦ HUMAN BODY ✦

DEFEND
NOW!

White blood cells, antibodies, vaccines, and the war you never see!

📖 Topic 02⏱️ 5 pages🧠 Quiz
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PATHOGEN
Invaders
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WBC
First responders
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ANTIBODY
Y-shaped tags
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VACCINE
Safe drill
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MEMORY
Remembers foes
🦠 THE IMMUNE SYSTEM
TOPIC 02 · IMMUNITY · VACCINES · WHITE BLOOD CELLS
PAGE 1 OF 5 · YOUR BODY'S ARMY
BATTLE
Immune cells battling invading germs and viruses in a microscopic war inside the body
WAR INSIDE YOU
Every second, specialised cells hunt bacteria, viruses, and other intruders. Most battles end before you feel a thing. Your immune system blends fast general defences with slower, precise learning that can remember enemies for years.
🧫 MICROBE FACT
Your body hosts trillions of microbes. Most are harmless or helpful — immunity learns to tell friend from foe.
FIGHT!
FIRST LINE
Skin and mucus membranes as the body's first line of defence against pathogens
🧱 Skin blocks most pathogens.
👃 Mucus traps invaders; stomach acid finishes many swallowed germs.
"Your immune system fights 24/7 — you're never not under attack!"
INNATE
Innate immunity: rapid general response attacking any foreign invader immediately
⚡ Fast, general response within minutes.
🎯 Attacks anything that reads as "foreign."
ADAPTIVE
Adaptive immunity: targeted response learning to recognise and destroy specific threats
🧠 Slower start, laser focus.
🔗 Builds antibodies matched to each pathogen.
INFLAMMATION
Inflammation response: heat and swelling as immune cells rush to the site of infection
🔥 Heat, redness, swelling = cells rushing to heal.
✅ Uncomfortable but part of repair.
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