About the Immune System Zone. Red and white blood cells. The immune system is made up of structures and processes which protect us from disease. White blood cells are one of the main components of our defense system.

The world around us is made up of molecules. The smallest droplet of water, or speck of dust will contain millions and millions of molecules. A single grain of sand is made up of around 20 million, million, million molecules of silicon dioxide. You can learn more about the five chemists in this zone, and how they work with molecules by reading their profiles.

Postdoctoral researcher in optics and photonics, University of St Andrews. I am currently a postdoctoral research fellow in the Optical Manipulation Group. At the University of St Andrews, Scotland, working. Previously I worked in the Photonics Center. Japan, in the group of Prof Satoshi Kawata. I studied for a PhD in the Optical Tweezers group. UK, under Dr Phil Jones, and at the University of St Andrews. UK, for an MPhys in Physics.

Hold an apple in front of you. Click on their names at the top of this page to find out more! And the winner is.

Scientists and students talk on this website. Break down barriers, have fun and learn. But only the students get to vote. This zone is the Wet and Wild Zone. It has a range of scientists studying all different topics.