Acquired immunity

immunity arising from exposure to antigens.
Historical Examples

Unprotected by hereditary or acquired immunity, he contracted tuberculosis and faded away before our eyes.
Hunting with the Bow and Arrow Saxton Pope

He demonstrated that “there is but one permanent element in natural or acquired immunity, and that is phagocytosis.”
Life of Elie Metchnikoff, 1845-1916 Olga Metchnikoff

As both native and imported horses are equally susceptible, there is no indication of an acquired immunity to be observed.
Special Report on Diseases of the Horse United States Department of Agriculture

Sometimes he had been ill but he had acquired immunity to certain poisonous plants that contained food values.
The Wealth of Echindul Noel Miller Loomis

In other words, it has acquired immunity against this particular germ and its toxin.
Preventable Diseases Woods Hutchinson

He has acquired immunity to many infections by having experienced them.
Disease and Its Causes William Thomas Councilman

the immunity produced by exposure of an organism to antigens, which stimulates the production of antibodies

acquired immunity n.
Immunity obtained either from the development of antibodies in response to exposure to an antigen, as from vaccination or an attack of an infectious disease, or from the transmission of antibodies, as from mother to fetus through the placenta or the injection of antiserum.
acquired immunity
Immunity that is not inherited. Acquired immunity can be active or passive. ◇ Active immunity results from the development of antibodies in response to an antigen, as from exposure to an infectious disease or through vaccination. ◇ Passive immunity results from the transmission of antibodies, as from mother to fetus through the placenta or by the injection of antiserum.


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