| PCL | pacing cycle length; persistent corpus luteum; plasma cell leukemia; posterior chamber lens; posteri... |
|---|---|
| PD | Doctor of Pharmacy; Dublin Pharmacopoeia; interpupillary distance; Paget disease; pancreatic duct; p... |
| PICA | percutaneous transluminal coronary angioplasty; Porch Index of Communicative Abilities; posterior in... |
| PP | diphosphate group; emphysema [pink puffers]; near point of accommodation [Lat. punctum proximum]; pa... |
| PPA | palpation, percussion, auscultation; pepsin A; phenylpropanolamine; phenylpyruvic acid; Pittsburgh p... |
| parietal region | The surface region of the head corresponding to the outlines of the underlying parietal bone. Synonym: regio parietalis capitis. (05 Mar 2000) |
|---|---|
| region | <anatomy> A plane area with more or less definite boundaries. (18 Nov 1997) |
| region of interest | In computed tomography or other computerised imaging, an interactively selected portion of the image, whose individual or average pixel values can be displayed numerically. (05 Mar 2000) |
| region of olfactory mucosa | 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) |
| region of respiratory mucosa | The area commencing at the vestibule of the nose lined with respiratory mucosa; with the exception of the olfactory mucusa, it includes the entire nasal cavity. Synonym: regio respiratoria tunicae mucosae nasi, respiratory region of tunica mucosa of nose. (05 Mar 2000) |
| region, regulatory | See: Regulatory sequence. (12 Dec 1998) |
| regulatory region | <molecular biology> A DNA base sequence that controls gene expression. (14 Oct 1997) |
| pectoral region | The region of the chest demarcated by the outline of the pectoralis major muscle. See: pectoral region, regions of chest. Synonym: regio pectoralis. (05 Mar 2000) |
| mediterranean region | The mediterranean sea, the mediterranean islands, and the countries bordering on the sea collectively. (12 Dec 1998) |
| gluteal region | The region of the buttocks. Synonym: regio glutealis. (05 Mar 2000) |
| centriolar region | See: pericentriolar region or centrosome. (18 Nov 1997) |
| respiratory region of tunica mucosa of nose | The area commencing at the vestibule of the nose lined with respiratory mucosa; with the exception of the olfactory mucusa, it includes the entire nasal cavity. Synonym: regio respiratoria tunicae mucosae nasi, respiratory region of tunica mucosa of nose. (05 Mar 2000) |
| V region | <molecular biology> Those regions in the amino acid sequence of both the heavy and the light chains of immunoglobulins where there is considerable sequence variability from one immunoglobulin to other of the same class, in contrast to constant sequence (C) regions. The V regions are associated with the antigen binding areas. They contain hypervariable regions of particularly high sequence diversity. (18 Nov 1997) |
| mental region | The region of the chin. Synonym: regio mentalis. (05 Mar 2000) |
| pericentriolar region | <cell biology> Rather amorphous region of electron dense material surrounding the centriole in animal cells: the major microtubule organising centre of the cell. (18 Nov 1997) |