This book is part of a book series called Cutting Edge Medicine .
This book has been graded for interest at 12-17 years.
There are 64 pages in this book. This book was published 2007 by World Almanac Library .
Dr Carol Ballard worked for many years as a school science co-ordinator. She is now a full-time writer of information books for children and teenagers.
This book is in the following series: