| immunopotentiator | Any of a wide variety of specific or non-specific substances which on inoculation enhances or augments an immune response. (05 Mar 2000) |
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| immunoprecipitation | <immunology> The precipitation of a multivalent antigen by a bivalent antibody, resulting in the formation of a large complex. The antibody and antigen must be soluble. Precipitation usually occurs when there is near equivalence between antibody and antigen concentrations. (18 Nov 1997) |
| immunoproliferative disorders | Disorders characterised by abnormal proliferation of primary cells of the immune system or by excessive production of immunoglobulins. (12 Dec 1998) |
| immunoproliferative small intestinal disease | A spectrum of conditions ranging from a benign plasma cell hyperplasia to a highly malignant lymphoma of the small intestine. (12 Dec 1998) |
| immunoproteins | Blood proteins whose activities affect or play a role in the functioning of the immune system. (12 Dec 1998) |
| immunoradiometric assay | <immunology> A test that measures the concentration of antigens in a specimen throughserological analysis that involves mixing radioactive antibodies with the antigen in question. (09 Oct 1997) |
| immunoreaction | An immunologic reaction, especially in vitro between antigen and antibody. (05 Mar 2000) |
| immunoreactive | Denoting or exhibiting immunoreaction. (05 Mar 2000) |
| immunoregulation | <immunology> The various processes by which antibodies may regulate immune responses. at a simple level, secreted antibody neutralises the antigen with which it reacts thus preventing further antigenic stimulation of the antibody producing clone. at a more complex level, anti-idiotype antibodies can be shown to develop against the first antibodies in some cases and perhaps further anti-idiotype antibodies against them. This is the major concept of the immunological network theory. (18 Nov 1997) |
| immunoselection | 1. Selective death or survival of foetuses of different genotypes depending on immunologic incompatibility with the mother. 2. The survival of certain cells depending on their surface antigenicity. (05 Mar 2000) |
| immunosensors | An antibody that serves as the biological component of a biosensor. Biosensors typically have a biological component and a detection component. The biological component confers selectivity on the sensor, and the detection component turns it into a recognisable 'signal.' Immunosensors detect the tiny changes in mass that occur when an antibody binds to an antigen. (14 Nov 1997) |
| immunosorbent | An antibody (or antigen) used to remove specific antigen (or antibody) from solution or suspension; commonly used with reference to antibody bound to a particulate substance such as a dextran polymer used to remove soluble antigen (e.g., insulin) from solution. (05 Mar 2000) |
| immunosorbent techniques | Techniques for removal by adsorption and subsequent elution of a specific antibody or antigen using an immunosorbent containing the homologous antigen or antibody. (12 Dec 1998) |
| immunosorbents | An insoluble support for an antigen or antibody used to adsorb the homologous antibody or antigen from a mixture; the adsorbed entity may then be eluted in pure form for assay or analysis; many different substances are used, among them sepharose, glutaraldehyde, copolymers of anhydrides, polyacrylamides, etc. (12 Dec 1998) |
| immunosuppressant | <immunology, pharmacology> An agent capable of suppressing immune responses. (18 Nov 1997) |