Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
6.3
Points
1.0
Fiction/Nonfiction
Nonfiction
Word Count
4464
Points per Word
0.000224
Page Count
48
Points per Page
0.020833
Series
KidHaven Science Library
Description
This book describes elements of the body's immune system, problems that can occur, and manmade ways to supplement the immune process.