The human immune system has various ways of responding to an infection caused by bacteria or viruses. Our bodies produce proteins (antibodies) that are highly specific for the infectious agent as a part of our "humoral" immune response....

Students learn about the immune system and complete a crossword puzzle to practice vocabulary. The instructional activity and a set of PowerPoint slides can be downloaded. Includes an instructional video on immune system vocabulary terms...

[Free Registration/Login may be required to access all resource tools.] If pathogens get through the body's first two lines of defense, a third line of defense takes over. This third line of defense involves the immune system. The immune...

There are battles that are fought each day on the planet. The invading forces are those of viruses and bacteria. Left alone they would take over and destroy every cell! It is up to some key defense systems to battle and destroy these...

This article will help students learn how to describe the lymphatic system and its functions in the immune response, explain the role of antigens, describe a humoral immune response, identify roles of different types of T cells, define...

Antibodies, also called immunoglobulins, are proteins manufactured by the body that help fight against foreign substances called antigens. When antigens enters the body, it stimulates the immune system to produce antibodies. (The immune...