| A/V | ampere/volt; arteriovenous |
|---|---|
| AVDO2 | arteriovenous oxygen saturation difference |
| AVDO2B | arteriovenous oxygen saturation difference, basal |
| AVF | antiviral factor; arteriovenous fistula |
| AVM | arteriovenous malformation; atrioventricular malformation; aviation medicine |
| elliptical anastomosis | A modification of direct anastomosis whereby one or both tubular structures are spatulated beforehand, thus creating an ellipse of greater cross-sectional as well as circumferential dimension than would be possible with a bevelled or circular anastomosis. (05 Mar 2000) |
|---|---|
| transureteroureteral anastomosis | Anastomosis of the transsected end of one ureter into the intact contralateral ureter, by direct or elliptical end-to-side technique. See: ureteroureterostomy. Synonym: transureteroureteral anastomosis. Acronym: TUU (05 Mar 2000) |
| Jacobson's anastomosis | A portion of the tympanic plexus. (05 Mar 2000) |
| uretero-ileal anastomosis | Anastomosis between the ureter and an isolated segment of ileum. See: Bricker operation. (05 Mar 2000) |
| ureterosigmoid anastomosis | Anastomosis between the ureter and a segment of the sigmoid colon. (05 Mar 2000) |
| ureterotubal anastomosis | Procedure for anastomosis between the ureter and the fallopian tube. (05 Mar 2000) |
| ureteroureteral anastomosis | Anastomosis from one part of a ureter to another part of the same ureter. (05 Mar 2000) |
| acrocephalosyndactyly type 1 | <paediatrics> An inherited disease (autosomal dominant) or a spontaneously occurring disease characterised by a peaked head and unusual facial appearance, due to the premature closure of the cranial sutures. A skull X-ray can confirm the diagnosis and treatment is surgical. Inheritance: autosomal dominant. (27 Sep 1997) |
| Alzheimer type I astrocyte | Enlarged frequently multinucleated astrocytes, seen in progressive multifocal leukoencephalopathy. (05 Mar 2000) |
| Alzheimer type II astrocyte | Enlarged astrocytes with vesicular nuclei and one or more small basophilic nucleoli, seen in hepatocerebral disease and Wilson's disease. (05 Mar 2000) |
| American Type Culture Collection | <cell culture> A key resource for cultured cells, located in Rockville, USA. (12 Dec 1998) |
| Antoni type A neurilemoma | <tumour> Relatively solid or compact arrangement of neoplastic tissue that consists of Schwann cells arranged in twisting bundles and associated with delicate reticulin fibres; the nuclei of the Schwann cells are frequently grouped in parallel rows (so-called palisades), and the nuclei and fibres sometimes form exaggerated tactile corpuscles, called Verocay bodies. (05 Mar 2000) |
| Antoni type B neurilemoma | <tumour> Relatively soft or loose arrangement of neoplastic tissue that consists of Schwann cells in a haphazard or nondescript type of arrangement among reticulin fibres and tiny cystlike foci; fat-laden macrophages may be observed in some of the larger neoplasms. (05 Mar 2000) |
| arthus-type reaction's | Reaction's in man and other species that result from the same basic immunologic (allergic) mechanism which evokes, in the rabbit, the typical Arthus phenomenon. See: immune complex disease. (05 Mar 2000) |
| avian adenovirus type 1 proteinase | <enzyme> 206 aa residues of which 66% are homologous to human ad2 emzyme embl/genbank l13161 Registry number: EC 3.4.22.- Synonym: aavl proteinase, aavl endopeptidase (26 Jun 1999) |