Studies by Emil von Behring and Shibasaburo Kitasato demonstrated that inactivated toxins can induce the synthesis of antitoxins in the blood of rabbits.These antitoxins (antibodies)are the basis of

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The production of antitoxins in response to inactivated toxins is a classic example of humoral immunity. Antibodies are produced by B cells in response to the presence of specific antigens (in this case, the inactivated toxin). These antibodies are then able to recognize and neutralize the toxin, thereby protecting the host. Cell-mediated immunity, on the other hand, involves the activation of T cells to directly attack infected or abnormal cells. Antibiotic immunity is not a recognized form of immunity, and phagocyte-mediated immunity is a component of innate immunity that involves the ingestion and destruction of foreign pathogens by white blood cells called phagocytes.

Studies by Emil Von Behring and Shibasaburo Kitasato Demonstrated That