Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
7.8
Points
1.0
Fiction/Nonfiction
Nonfiction
Word Count
4257
Points per Word
0.000235
Page Count
40
Points per Page
0.025
Description
This book presents a study of the immune system, explaining the crucial role of each member and discussing immuodeficiency disorders, autoimmune diseases, and allergies.