| SACS | secondary anticoagulation system |
|---|---|
| SC | conditioned stimulus; sacrococcygeal; Sanitary Corps; scalenus [muscle]; scapula; Schwann cell; scia... |
| sec | second; secondary; section |
| SEM | sample evaluation method; scanning electron microscopy; secondary enrichment medium; standard error ... |
| SGE | secondary generalized epilepsy |
| conditioned response | A response already in an individual's repertoire but which, through repeated pairings with its natural stimulus, has been acquired or conditioned anew to a previously neutral or conditioned stimulus. See: conditioning. Compare: unconditioned response. (05 Mar 2000) |
|---|---|
| Cushing response | A rise in systemic blood pressure when the intracranial pressure acutely increases, usually in excess of 50% of the systolic arterial pressure. Synonym: Cushing effect, Cushing response. (05 Mar 2000) |
| primary antibody response | <immunology> Antibodies made upon first exposure to an antigen, mostly of the class IgM. (05 Mar 1998) |
| heat-shock response | <cell biology> A constellation of responses that occur when an organism is exposed to excessive heat and other environmental stresses. Responses include synthesis of some proteins, repression of other proteins, and expression of new proteins. (12 Dec 1998) |
| heat-shock response element | <cell biology, protein> The nucleotide sequence, CNNGAANNTCCNG, which is in the promoter region of the heat-shock genes. When the animal is exposed to certain types of stress such as a sudden rise in temperature, the first thing that happens to activate these genes is the binding of the HSE by a transcriptional enhancer protein. (09 Oct 1997) |
| Henry-Gauer response | Inhibition of antidiuretic hormone secretion due to a rise in atrial pressure which stimulates atrial stretch receptors. (05 Mar 2000) |
| satiety response | Behavioural response associated with the achieving of gratification. (12 Dec 1998) |
| psychogalvanic response | A change in electrical resistance of the skin, occurring in emotion and in certain other conditions. (12 Dec 1998) |
| serum response element | Dyad symmetry element bound by serum response factor to control the expression of c fos. (18 Nov 1997) |
| serum response factor | Transcription factor that binds to the serum response element upstream of the site of transcription initiation of genes such as c fos. (18 Nov 1997) |
| signal response coupling | The cascade of processes by which an extracellular signal (typically a hormone or neurotransmitter) interacts with a receptor at the cell surface, causing a change in the level of a second messenger for example calcium or cyclic AMP) and ultimately effects a change in the cells functioning (for example: triggering glucose uptake or initiating cell division). Can also be applied to sensory signal transduction, for example of light at photoreceptors. (18 Nov 1997) |
| hypersensitive response | An active response of plant cells to pathogenic attack in which the cell undergoes rapid necrosis and dies. Associated with the production of phytoalexins, lignin and sometimes callose. The response is thought to prevent a potential pathogen from spreading through the tissues. (18 Nov 1997) |
| sonomotor response | Widespread myogenic potential evoked by click stimulation. (05 Mar 2000) |
| sos response (genetics) | An error-prone mechanism or set of functions for repairing damaged microbial DNA. Sos functions (a concept reputedly derived from the sos of the international distress signal) are involved in DNA repair and mutagenesis, in cell division inhibition, in recovery of normal physiological conditions after DNA repair, and possibly in cell death when DNA damage is extensive. (12 Dec 1998) |
| stringent response | The cellular response to amino acid starvation that reduces the amount of ribosomes to what can be employed under the nutrient conditions. (05 Mar 2000) |