Freund adjuvant


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Related to Freund adjuvant: Freund's incomplete adjuvant

ad·ju·vant

(ad'jū-vănt),
1. A substance added to a drug product formulation that affects the action of the active ingredient in a predictable way.
2. immunology a vehicle used to enhance antigenicity; for example, a suspension of minerals (alum, aluminum hydroxide, or phosphate) on which antigen is adsorbed; or water-in-oil emulsion in which antigen solution is emulsified in mineral oil (Freund incomplete adjuvant), sometimes with the inclusion of killed mycobacteria (Freund complete adjuvant) to enhance antigenicity further (inhibits degradation of antigen and/or causes influx of macrophages).
3. Additional therapy given to enhance or extend primary therapy's effect, as in chemotherapy's addition to a surgical regimen.
4. A treatment added to a curative treatment to prevent recurrence of clinical cancer from microscopic residual disease.
[L. ad-juvo, pres. p. -juvans, to give aid to]

ad·ju·vant

(ad'jū-vănt)
1. A substance added to a drug product formulation that affects the action of the active ingredient in a predictable way.
2. immunology A vehicle used to enhance antigenicity.
3. Additional therapy given to enhance or extend primary therapy's effect, such as in chemotherapy in addition to a surgical regimen.
4. A treatment added to a curative treatment to prevent recurrence of clinical cancer from microscopic residual disease.
[L. ad-juvo, pres. p. -juvans, to give aid to]

Freund adjuvant

A mixture of killed microorganisms, usually mycobacteria, in an oil and water emulsion. The material is administered to induce antibody formation. Because the oil retards absorption of the mixture, the antibody response is much greater than if the killed microorganisms were administered alone.