| OA/BVM | oral airway/bag-valve-mask |
|---|---|
| OAS | old age security; oral allergy syndrome; osmotically active substance |
| OAW | oral airways |
| OC | obstetrical conjugate; occlusocervical; office call; on call; only child; optic chiasma; oral contra... |
| OCA | oculocutaneous albinism; olivopontocerebellar atrophy; oral contraceptive agent |
| early region | <molecular biology> Part of a viral genome in which early genes genes that are transcribed and expressed early during infection of a cell are clustered. (18 Nov 1997) |
|---|---|
| epigastric region | The region of the abdomen located between the costal margins and the subcostal plane. Synonym: epigastrium, regio epigastrica. (05 Mar 2000) |
| J region | <molecular biology> The polypeptide chains coded for by J genes. (18 Nov 1997) |
| umbilical region | The central region of the abdomen about the umbilicus. Synonym: regio umbilicalis. (05 Mar 2000) |
| untranslated region | <molecular biology> The regions of a cDNA, typically that 5' to the initiation (ATG) site and that 3' to the stop site, which are not translated to make a peptide. Their functions are not well understood. (18 Nov 1997) |
| femoral region | The region of the thigh between hip and knee. Synonym: regio femoralis. (05 Mar 2000) |
| zygomatic region | The region of the face outlined by the zygomatic bone; the prominence above the cheek. Synonym: regio zygomatica. (05 Mar 2000) |
| K region | Carbons 9 and 10 of the phenanthrene ring system; thought by some to be the reactive spot in the various hydrocarbon carcinogens. (05 Mar 2000) |
| fibrillar region | <cell biology> Dense staining region of the nucleolus composed of 5nm fibres, RNA transcripts. (12 Nov 1997) |
| urogenital region | The anterior portion of the perineal region containing the openings of the urethra and vagina in the female and the urethra and root structures of the penis in the male. Synonym: regio urogenitalis, urogenital region. (05 Mar 2000) |
| flanking region | <molecular biology> The DNA sequences extending on either side of a specific locus or gene. (09 Oct 1997) |
| lateral hypothalamic region | Extends throughout most of the rostrocaudal extent of the hypothalamus lateral to the column of the fornix; includes lateral tuberal nuclei, tuberomamillary nuclei, and diffuse populations of cells. Synonym: lateral hypothalamic area. (05 Mar 2000) |
| lateral region | The area of the abdomen on each side of the umbilical region between transpyloric plane and intertubercular or interspinous plane. Synonym: regio lateralis. (05 Mar 2000) |
| lateral region of neck | The region of the neck bounded by the sternocleidomastoid muscle, the trapezius muscle, and the upper border of the clavicle, including the omoclavicular triangle. Synonym: lateral region of neck, regio cervicalis lateralis, trigonum cervicale posterius. (05 Mar 2000) |
| frontal region of head | The surface region of the head corresponding to the outlines of the frontal bone. Synonym: regio frontalis capitis. (05 Mar 2000) |