Battle with the Bugs: An Imaginative Journey Through the Immune System (Human Body Detectives

In Battle with the Bugs, Merrin and Pearl enter their cousin, Max's, immune system to find out why he was sick. During their journey, they travel up Max's nose, ride on a white blood cell into battle against the bacteria that was making Max sick, and use their knowledge of nutrition to successfully end Max's fever. In the end, they not only learn about the different types of white blood cells and what they do to keep us healthy, they also get a firsthand lesson on the functions of the immune system.