Mon Prof Augmenté
Immune Defense in the Blood
Age 14 · Science
White blood cells patrol the blood and can wrap around invaders to take them inside. Antibodies are Y-shaped proteins that stick to invaders and stop them from causing harm.
This picture is part of the full library
Every lesson is open to everyone for 7 days after it is published. This one came out on October 6, 2026: its text stays readable here, and its picture opens with a subscription.
The app is free. A subscription opens every lesson, in every school year.
In the picture
- A white blood cell membrane: it stretches around the rod-shaped bacterium.
- A trapped bacterium: it sits inside the white blood cell’s pocket.
- An antibody: its Y-shaped arms bind to the bacterium’s surface.
- A red blood cell: a disc-shaped cell drifting in the plasma.
Examples
- A scraped knee turns red and swollen as immune cells rush to the area.
- A vaccine helps the body make antibodies before a real infection arrives.
Key takeaways
- White blood cells can engulf and digest pathogens.
- Antibodies bind to pathogens and neutralize them.
Quiz: Immune Defense in the Blood (Age 14)
-
What do white blood cells do to pathogens?
-
What do antibodies do to pathogens?
-
What shape are antibodies?
The answers, each with its explanation, are in the app. This lesson has left the free week, so its quiz is part of the subscription.
Free app, optional subscription
App Store Google Play
Carry on in the app
At least one new illustrated lesson every weekday for your child’s year, with its quiz and a reminder at 6:15 pm.
Your child’s teacher does not use My Enhanced Teacher yet?
Tell them about it
