| PF | pair feeding; peak flow; perfusion fluid; pericardial fluid; periosteal fibroblast; peritoneal fluid... |
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| LIF | laser-induced fluorescence; left iliac fossa; left index finger; leukemia-inhibiting factor; leukocy... |
| PRF | partial reinforcement; patient report form; perforin; plasma recognition factor; pontine reticular f... |
| PAF | paroxysmal atrial fibrillation; peroxisomal assembly factor; phosphodiesterase-activating factor; pl... |
| SF | Sabin-Feldman [test]; safety factor; salt-free; scarlet fever; screen film; seminal fluid; serosal f... |
| macrophage migration-inhibitory factors | Proteins released by sensitised lymphocytes and possibly other cells that inhibit the migration of macrophages away from the release site. The structure and chemical properties may vary with the species and type of releasing cell. (12 Dec 1998) |
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| gastric inhibitory polypeptide | <hormone> Peptide hormone (43 amino acids) that stimulates insulin release and inhibits the release of gastric acid and pepsin. Acronym: GIP (18 Nov 1997) |
| G-protein, inhibitory GI | A g-protein that inhibits adenylyl cyclase and activates k+ channels. (12 Dec 1998) |
| minimal inhibitory concentration | <microbiology, pharmacology> The lowest concentration of antibiotic sufficient to inhibit bacterial growth when tested in vitro. (05 Mar 2000) |
| inhibitory | Of or pertaining to, or producing, inhibition; consisting in inhibition; tending or serving to inhibit; as, the inhibitory action of the pneumogastric on the respiratory center. "I would not have you consider these criticisms as inhibitory. <physiology> " (Lamb) Inhibitory nerves, those nerves which modify, inhibit, or suppress a motor or secretory act already in progress. Origin: LL. Inhibitorius: cf. F. Inhibitoire. Source: Websters Dictionary (01 Mar 1998) |
| inhibitory fibres | Nerve fibre's that inhibit the activity of the nerve cells with which they have synaptic connections, or of the effector tissue (smooth muscle, heart muscle, glands) in which they terminate. (05 Mar 2000) |
| inhibitory junction potential | Hyperpolarization of smooth muscle produced by stimulation of inhibitory nerves. (05 Mar 2000) |
| inhibitory-motor | <physiology> A term applied to certain nerve centers which govern or restrain subsidiary centers, from which motor impressions issue. Source: Websters Dictionary (01 Mar 1998) |
| inhibitory nerve | <anatomy, nerve> A nerve conveying impulses that diminish functional activity in a part. (05 Mar 2000) |
| inhibitory postsynaptic potential | The change in potential produced in the membrane of the next neuron when an impulse which has an inhibitory influence arrives at the synapse; it is a local change in the direction of hyperpolarization; the frequency of discharge of a given neuron is determined by the extent to which impulses that lead to excitatory postsynaptic potential's predominate over those that cause inhibitory postsynaptic potential's. (05 Mar 2000) |
| inhibitory synapse | A synapse in which an action potential in the presynaptic cell reduces the probability of an action potential occurring in the postsynaptic cell. The most common inhibitory neurotransmitter is GABA, this opens channels in the postsynaptic cell which tend to stabilise its resting potential, thus rendering it less likely to fire. See: excitatory synapse, presynaptic inhibition, postsynaptic inhibition. (18 Nov 1997) |
| leukocyte migration-inhibitory factors | Protein factor(s) released by sensitised lymphocytes (and possibly other cells) that inhibit the movement of leukocytes, especially polymorphonuclear cells, away from their site of release. Assays for these factors are used as tests for cellular immunity. Two of the common assays are the leukocyte migration capillary tube technique (lmct) and the leukocyte migration agarose technique (lmat). (12 Dec 1998) |
| accelerator factor | <chemical> Heat- and storage-labile plasma glycoprotein which accelerates the conversion of prothrombin to thrombin in blood coagulation. Factor v accomplishes this by forming a complex with factor xa, phospholipid, and calcium (prothrombinase complex). Deficiency of factor v leads to owren's disease. Chemical name: Blood-coagulation factor V (12 Dec 1998) |
| acetate replacement factor | <biochemistry> 1,2 dithiolane 3 valeric acid. Regarded as a coenzyme in the oxoglutarate dehydrogenase complex of the citric acid cycle. Involved generally in oxidative decarboxylations of _ keto acids. A growth factor for some organisms. (18 Nov 1997) |
| adrenal weight factor | A postulated substance of adenohypophysial origin responsible for maintenance of the weight of the adrenal cortex. (05 Mar 2000) |