Learn how vaccines help the immune system protect people against diseases in this video. [3:37] The immune system is a natural defense system that uses biological processes to fight invaders such as germs. Vaccines introduce a weakened...

Temporal arteritis (otherwise known as giant-cell arteritis) is a type of vasculitis that affects medium to large arteries in the head. Patients with temporal arteritis can have symptoms like migraines and sudden vision problems. Learn...

Researchers say they've identified the gene that tells the body to produce one type of immune antibody.

This lesson will investigate an antibody-mediated immune response. It is 1 of 3 in the series titled "Antibody-Mediated Immunity (Humoral Immunity)."

This lesson will explain how vaccines can be used to assist the body in producing antibodies towards certain diseases. It is 2 of 10 in the series titled "Vaccines."

This lesson will explain how vaccines can be used to assist the body in producing antibodies towards certain diseases. It is 1 of 10 in the series titled "Vaccines."