Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
8.8
Points
2.0
Fiction/Nonfiction
Nonfiction
Word Count
12000
Points per Word
0.000167
Page Count
79
Points per Page
0.025316
Description
This book chronicles discoveries made since ancient times in learning about disease and how the body's immune system fights and conquers it.