Skip to content

Search for:

Competitions
Quizzes
Science
Technology
Environment
Space
Transport
History
Experiments

About How It Works
Subscription Offers
Back issues
Bookazines
Sign up to our newsletter!
Privacy Policy
Privacy Settings

Search for:

Competitions
Quizzes
Science
Technology
Environment
Space
Transport
History
Experiments

Science / What's inside

White blood cells at work

by How It Works Team · 12/11/2012

[fototag id=”Whiteblood”]

Follow:

Win a smart bird feeder worth £279.99

Best Outdoor Gadgets 2026: The Ultimate Gear Wish List

Our latest book

LATEST OFFER

More

Next story What is an Australian fire devil?
Previous story How to… Pilot a hot-air balloon

Get the new issue

How It Works 215 Cover

On sale now

Buy Online
Subscribe Now

Read on Apple News+

NEWSLETTER

Fast facts on Instagram (@howitworksmag)

About How It Works
Subscription Offers
Back issues
Bookazines
Sign up to our newsletter!
Privacy Policy
Privacy Settings

How It Works © 2026. All Rights Reserved.

Powered by - Designed with the Hueman theme