1. X-rays

2. X-rays was discover in 1895.

3. X-ray are shone through the body.

4. Each kid of tissue lets x-rays through differently.

5. X-rays are very good at showing up bones.so if you break a bone it will probably be x-rayed.

6. Immunisation.

7. Immunisation is also a key to ensure global health.

8. Immunisation saves more then 1 million lives a year.

9. Over 1 million young children die every year from diarrhoea or from other diseases.

10. MRI machine

11. MRI scanners are a powerful tools

12. MRI machine can show problems that cant be seen with other machines.

13. MRI machine contains a strong magnet.

14. ECG machine.

15. ECG machine works by recording heart beat rate.

16. ECG means electrocardiogram machine.

17. The ECG machine canno