Antitoxin
Antibody formed in the body in reaction to a bacterial
toxin, which it can neutralize.
People who have recovered from bacterial diseases often
develop specific antitoxins that give them immunity against recurrence.
Injecting an animal (usually a horse) with increasing doses of toxin produces a
high concentration of antitoxin in the blood. The resulting highly concentrated
preparation of antitoxins is called an antiserum. The first antitoxin developed
(1890) was specific to diphtheria; today, antitoxins are also used to treat
botulism, dysentery, gas gangrene, and tetanus.
Source:Britannica
encyclopedia
