And antibody is a [[blood]] [[protein]] that is produced in response to, and counteracts, an [[antigen]]. Antibodies are produced in response to disease and help the body fight against the particular disease. In this way, antibodies help the body develop an immunity to disease. | And antibody is a [[blood]] [[protein]] that is produced in response to, and counteracts, an [[antigen]]. Antibodies are produced in response to disease and help the body fight against the particular disease. In this way, antibodies help the body develop an immunity to disease. |