Anti-serums, also known as antibodies or immune globulins, are substances produced by the immune system in response to the presence of foreign substances, such as viruses or bacteria. Synonyms for anti-serums include antitoxins, serums, immunoglobulins, and immunosera. Antitoxins are specific anti-serums produced against toxins or poisons. Serums are similar to anti-serums, used to treat diseases caused by certain viruses or bacteria. Immunoglobulins are proteins produced by the immune system that recognize and neutralize foreign antigens. Immunosera is a mixture of different anti-serums, produced by immunizing an animal with a variety of antigens. Synonyms for anti-serums allow for a greater understanding and communication about the use and effectiveness of these substances in medical treatments.