The Five Antibody Classes in Placental Mammals
Antibodies are special antibody proteins produced by the immune system. They protect the body from being invaded by infections and diseases by "recognizing" viruses, bacteria, and infected cells. In placental mammals, there exist five different types of antibodies, or antibody classes or isotypes, which define what role the antibody plays in the body. This article will walk you through these antibody classes.
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