| olfactory region of tunica mucosa of nose | The specialised olfactory receptive area that includes the upper one-third of the nasal septum and the lateral wall above the superior concha; it is lined with olfactory mucosa. Synonym: regio olfactoria tunicae mucosae nasi, olfactory region of tunica mucosa of nose, Schultze's membrane. (05 Mar 2000) |
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| operator region | <genetics> DNA sequences which signal the initiation of transcription when derepressed. (12 Dec 1998) |
| oral region | The region of the face including the lips and mouth. Synonym: regio oralis. (05 Mar 2000) |
| orbital region | The region about the orbit. Synonym: regio orbitalis. (05 Mar 2000) |
| temporal region of head | The surface region of the head corresponding approximately to the outlines of the temporal bone. Synonym: regio temporalis capitis. (05 Mar 2000) |
| termination region | <molecular biology> A DNA sequence that signals the end of transcription. (13 Jan 1998) |
| 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) |