immunity

Explains what germs are, how they attack the body, and how the body protects itself against their onslaught. Includes material on immunization and research in disease control.

Explains good and bad germs, the different kinds, how they can help you, how some cause diseases, and how we fight diseases.

Questions and answers explain the human immune system and how it works, as well as allergies and vaccines.

Sam and his mother talk about germs, viruses, and bacteria, including how the body fights harmful germs and uses germs that are helpful.

Explains how the body defends itself against disease, including the roles of bacteria, viruses, and other germs, and the cells that work to protect the body against them.

Ralphie is crushed when a fever keeps him home from school on the day he is scheduled to host the Frizzle News Network television broadcast on health, but he ends up hosting anyway--as the specimen under study.

Describes how our bodies use their resources to fight off infections such as colds and sore throats. Includes activities illustrating how germs spread and how the body reacts to colds.