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Noun

immunizing agent - any substance or organism that provokes an immune response (produces immunity) when introduced into the body

vaccine, vaccinum - immunogen consisting of a suspension of weakened or dead pathogenic cells injected in order to stimulate the production of antibodies

toxin antitoxin - a mixture of toxin and antitoxin used to immunize against a disease

antigen - any substance (as a toxin or enzyme) that stimulates an immune response in the body (especially the production of antibodies)

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References in periodicals archive

A prescription by an authorized prescriber is required to administer any immunizing agent and any medication to treat any adverse reactions caused by an immunizing agent.

Influenza immunization: RNS prepare for flu season

The proteins then reassemble themselves on the ceramic." The decoy virus has the same shape as the real virus, he adds, so "the decoy acts as an effective immunizing agent."

Decoy viruses could lead to vaccines

The smallpox vaccine, formulated with vaccinia virus, is a highly effective immunizing agent. In 1980, the World Health Organization certified that the world was free of naturally occurring smallpox, and smallpox immunization programs were subsequently discontinued (1).

Accidental infection of laboratory worker with vaccinia virus. (Dispatches)

In ovo vaccination has been successfully used to protect against poultry infectious diseases since the initial observations by Sharma and Witter [17] that 18-day-old embryos develop post-hatch immunity against the immunizing agents. Subsequent research indicated that vaccination of late-stage chicken embryos was safe and induced immunity earlier compared with post-hatch immunization [18].

In ovo vaccination using Eimeria profilin and Clostridium perfringens NetB proteins in Montanide IMS adjuvant increases protective immunity against experimentally-induced necrotic enteritis

The efficacy of 3 commercial Mycoplasma gallisepticum (MG) immunizing agents a bacterin, a recombinant fowlpox-MG vaccine, and a live Fstrain vaccin--was compared in specific-pathogen--free hens in egg production.

The efficacy of three commercial Mycoplasma gallisepticum vaccines in laying hens