Title: The Magic School Bus Inside Ralphie
First published: January 1995
Description: Ralphie's sick and can't host the Frizzle News Network TV show on health--until Ms. Frizzle and the gang travel inside his bloodstream to learn how the human body fights germs.
Subjects: Natural immunity, Juvenile literature, Infection, Immunity, Stars, Volcanoes, Astronomy, Bacteria, Hydrologic cycle, Communicable diseases, Bacteriology, Bacteria, juvenile literature, Science, Science, juvenile literature