| GIF | gastric intrinsic factor; growth hormone-inhibiting factor |
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| IA | ibotenic acid; immune adherence; immunoadsorbent; immunobiologic activity; impedance angle; indolami... |
| IFC | intermittent flow centrifugation; intrinsic factor concentrate |
| IHR | intrahepatic resistance; intrinsic heart rate |
| MIP | macrophage inflammatory protein; major intrinsic protein; maximum inspiratory pressure; maximum inte... |
| fluorescence polarization immunoassay | Fluoroimmunoassay where detection of the hapten-antibody reaction is based on measurement of the increased polarization of fluorescence-labelled hapten when it is combined with antibody. The assay is very useful for the measurement of small haptenic antigens such as drugs at low concentrations. (12 Dec 1998) |
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| fluorescence recovery after photobleaching | Many fluorochromes are bleached by exposure to exciting light. If, for example: the cell surface is labelled with a fluorescent probe and an area bleached by laser illumination, then the bleached patch that starts off as a dark area will gradually recover fluorescence. The recovery is due to the re population of the area by unbleached molecules and diffusion of bleached molecules to other areas. The rate and extent of recovery are a measure of the fluidity of the membrane and the proportion of labelled molecules that are free to exchange with adjacent areas. The technique is usually applied to cell surface fluidity or viscosity measurements, but is also applicable to other structures. (18 Nov 1997) |
| fluorescence spectrum | Fluorescence evoked over a range of wavelengths when the excitation wavelength is at a maximum. (05 Mar 2000) |
| major intrinsic protein | <protein> Family of structurally related proteins with 6 transmembrane segments, associated with gap junctions or vacuoles. MIP is found in lens fibre gap junctions. Other members: nodulin 26 (soybean), tonoplast intrinsic protein (TIP) found in plant storage vacuoles, Drosophila neurogenic protein big brain. (18 Nov 1997) |
| Castle's intrinsic factor | A mucoprotein normally secreted by the epithelium of the stomach and that binds vitamin B12, the intrinsic factor/B12 complex is selectively absorbed by the distal ileum, though only the vitamin is taken into the cell. (18 Nov 1997) |
| vitamin B12 with intrinsic factor concentrate | A combination of vitamin B12 with suitable preparations of the mucosa of the stomach or intestine of domestic animals used for food by humans. (05 Mar 2000) |
| positive-pressure respiration, intrinsic | Non-therapeutic positive end-expiratory pressure occurring frequently in patients with severe airway obstruction. It can appear with or without the administration of external positive end-expiratory pressure (positive-pressure respiration). It presents an important load on the inspiratory muscles which are operating at a mechanical disadvantage due to hyperinflation. Auto-peep may cause profound hypotension that should be treated by intravascular volume expansion, increasing the time for expiration, and/or changing from assist mode to intermittent mandatory ventilation mode. (12 Dec 1998) |
| intrinsic | Situated entirely within or pertaining exclusively to a part. Origin: L. Intrinsecus = situated on the inside (18 Nov 1997) |
| intrinsic asthma | <chest medicine> Bronchial asthma in which no extrinsic causes can be identified, and which is assumed to be due to an endogenous process, possibly allergic. (05 Mar 2000) |
| intrinsic colour | <dentistry> The addition of colour pigment within the material of a dental prosthesis. (05 Mar 2000) |
| intrinsic deflection | <physiology> With the electrode in direct contact with the muscle fibre, a rapid downward deflection from the peak of maximum positivity, signifying that the activation front has reached the subjacent muscle. (05 Mar 2000) |
| intrinsic dysmenorrhoea | <gynaecology> Painful menses due to a functional disturbance and not due to organic factors such as growths, inflammation or anatomy. (27 Sep 1997) |
| intrinsic factor | A mucoprotein normally secreted by the epithelium of the stomach and that binds vitamin B12, the intrinsic factor/B12 complex is selectively absorbed by the distal ileum, though only the vitamin is taken into the cell. (18 Nov 1997) |
| intrinsic fibres | Nerve fibre's interconnecting subdivisions of the cerebral cortex of the same hemisphere or different segments of the spinal cord on the same side. Synonym: endogenous fibres, intrinsic fibres. (05 Mar 2000) |
| intrinsic motivation | Derivation of personal satisfaction through self-initiated achievement and behaviour. (05 Mar 2000) |