| HIF | higher integrative functions |
|---|---|
| SOS, S.O.S. | À§±Þ½Ã |
| SOS | self-obtained smear; supplemental oxygen system |
| AD-SoS | Amplitude dependent speed of sound |
|---|---|
| CCF | Cross-correlation functions |
| DF | Discriminant Functions |
| LSF | Line spread functions |
| OTF | Optical transfer functions |
| pupillary functions, abnormal | Conditions in which the pupil does not react normally to dilation and constriction. Signs of pupillary abnormalities originate from the pupil's shape, position, and response to stimulation. (12 Dec 1998) |
|---|---|
| likelihood functions | Functions constructed from a statistical model and a set of observed data which give the probability of that data for various values of the unknown model parameters. Those parameter values that maximise the probability are the maximum likelihood estimates of the parameters. (12 Dec 1998) |
| sos | Guanine nucleotide releasing factor (155 kD), the mammalian homologue of son of sevenless. The proline rich region of sos binds to the SH3 domain of GRB2. Has homology with CDC 25, the yeast GTP releasing factor for ras. (18 Nov 1997) |
| SOS genes | A group of genes involved in DNA repair, often induced by damage severe enough to cause stoppage of DNA synthesis. (05 Mar 2000) |
| SOS repair | A system that repairs severely damaged bases in DNA by base excision and replacement, even if there is no template to guide base selection. This process is a last resort for repair, and is often the cause of mutations. Synonym: error-prone repair. (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) |
| SOS system | The DNA repair system also called error prone repair in which apurinic DNA molecules are repaired by incorporation of a base that may be the wrong base but that permits replication. RecA protein is required for this type of repair. SOS genes function in control of the cell cycle in pro and eu karyotes. (18 Nov 1997) |
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