| OCH | oral contraceptive hormone |
|---|---|
| OCM | oral contraceptive medication |
| OCS | occipital condyle syndrome; Ondine's curse syndrome; open canalicular system; oral contraceptive ste... |
| OCT | object classification test; optimal cutting temperature; oral contraceptive therapy; ornithine carba... |
| OES | oral esophageal stethoscope; optical emission spectroscopy |
| high frequency recombination strain | A type of bacterial strain which is able to pass on genetic information to neighboring bacteria at a high rate. The high-frequency recombination strain (Hfr) is able to do this because it possesses the f plasmid and can therefore initiate bacterial conjugation. (09 Oct 1997) |
|---|---|
| high frequency transduction | Specialised transduction in which the donor bacterium contains not only the transducing, defective probacteriophage but also nondefective prophage that serves as "helper" virus, enabling most of the defective prophage particles to develop sufficiently to function as transducing agents. (05 Mar 2000) |
| high-frequency ventilation | Ventilatory support system using frequencies from 60-900 cycles/min or more. Three types of systems have been distinguished on the basis of rates, volumes, and the system used. They are high frequency positive-pressure ventilation (hfppv), high-frequency jet ventilation (hfjv), and high-frequency oscillation (hfo). (12 Dec 1998) |
| high-hearted | Full of courage or nobleness; high-souled. High"-heartedness. Source: Websters Dictionary (01 Mar 1998) |
| high-hoe | <zoology> The European green woodpecker or yaffle. Alternative forms: high-hoo. Source: Websters Dictionary (01 Mar 1998) |
| high-holder | <zoology> The flicker. Synonym: high-hole. Source: Websters Dictionary (01 Mar 1998) |
| high-kV technique | Chest radiography using a kilovoltage of at least 125 kVp, usually 140-150 kVp, to reduce patient dose and increase latitude. (05 Mar 2000) |
| high lip line | The greatest height to which the lip is raised in normal function or during the act of smiling broadly. (05 Mar 2000) |
| high lithotomy | Lithotomy in which the bladder is entered by an incision immediately above the symphysis pubis. Synonym: high lithotomy. (05 Mar 2000) |
| high mannose oligosaccharide | <biochemistry> A subset of the N glycan chains that are added post translationally to certain asparagine residues of secreted or membrane proteins in eukaryotic cells, contain 5-9 mannose residues, but lack the sialic acid terminated antennae of the so called complex type. (18 Nov 1997) |
| high-mobility group protein | <protein> An HMG protein is one of a group of various different proteins which are somehow involved with chromatin, but which are not histones and whose exact function is not known. (09 Oct 1997) |
| high mobility group proteins | Family of small, nonhistone, nuclear proteins. Some appear to be involved in controlling transcription. (18 Nov 1997) |
| high osmolar contrast agent | Ionic water-soluble iodinated contrast media. Synonym: high osmolar contrast medium. (05 Mar 2000) |
| high osmolar contrast medium | Ionic water-soluble iodinated contrast media. Synonym: high osmolar contrast medium. (05 Mar 2000) |
| high output failure | Heart failure in which, despite relative myocardial insufficiency and consequent congestive heart failure, the cardiac output is maintained at normal or supernormal levels, as is sometimes seen in emphysema, thyrotoxicosis, etc. (05 Mar 2000) |