| sugar-non-specific nuclease | <enzyme> An exocytoplasmic sugar-non-specific nuclease that is able to degrade linear or covalently closed circular double-stranded DNA as well as single-stranded DNA or RNA; from cyanobacterium anabaena; mw 29 kD; amino acid sequence has been determined Registry number: EC 3.1.- Synonym: nuca gene product, anabaena (26 Jun 1999) |
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| sugar of lead | Has been used as an astringent in diarrhoea, and in aqueous solution as a wet dressing in certain dermatoses. Synonym: sugar of lead. (05 Mar 2000) |
| sugar-phosphatase | <enzyme> Acts on a wide range of hexosephosphates, pentosephosphates and oligosaccharidesphosphates Registry number: EC 3.1.3.23 Synonym: sugar phosphate phosphohydrolase, hexose-6-phosphate phosphohydrolase (26 Jun 1999) |
| sugar tumour | A benign clear cell tumour of the lung containing abundant glycogen. (05 Mar 2000) |
| deoxy sugar | A sugar containing fewer oxygen atoms than carbon atoms and in which, consequently, one or more carbons in the molecule lack an attached hydroxyl group. Synonym: desoxy sugar. (05 Mar 2000) |
| desoxy sugar | A sugar containing fewer oxygen atoms than carbon atoms and in which, consequently, one or more carbons in the molecule lack an attached hydroxyl group. Synonym: desoxy sugar. (05 Mar 2000) |
| invert sugar | Subjected to chemical inversion: inverted. (18 Nov 1997) |
| oil sugar | A class of preparations made by the trituration of a volatile oil (anise, fennel, lemon, etc.) with sugar; used as a diluent or corrigent of powerful or bad tasting drugs in powder form. Synonym: oil sugar. Origin: oleo-+ G. Saccharon, sugar (05 Mar 2000) |
| fruit sugar | D-fructose. See: fructose. (05 Mar 2000) |
| ABO blood group | <haematology> The major human blood type system which describes the oligosaccharide glycoprotein antigens found on the surface of human blood cells. According to the type of antigen present, a person may be assigned a blood type of A, B, AB or O. A second type of antigen, the Rh factor, renders a positive or negative blood type. The ABO blood group system is important because it determines who can donate blood to or accept blood from whom. Type A or AB blood will cause an immune reaction in people with type B blood and type B and AB blood will cause a reaction in people with type A blood. Conversely, type O blood has no A or B antigens, so people with type O blood are universal donors. And since AB blood already produces both antigens, people who are type AB can accept any of the other blood types without suffering an immune reaction. (04 Jul 1999) |
| arterial blood | Blood that is oxygenated in the lungs, found in the left chambers of the heart and in the arteries, and relatively bright red. (05 Mar 2000) |
| arterial blood gas | A test which analyses arterial blood for oxygen, carbon dioxide and bicarbonate content in addition to blood pH. Used to test the effectiveness of respiration. Acronym: ABG (17 Oct 1997) |
| blood | <haematology> Considered a circulating tissue composed of a fluid portion (plasma) with suspended formed elements (red blood cells, white blood cells, platelets). Arterial blood is the means by which oxygen and nutrients are transported to tissues, venous blood is the means by which carbon dioxide and metabolic by-products are transported for excretion. (05 Jan 1998) |
| blood agar | <cell culture> An agar-based medium which hasbeen enriched with sterilised, defibinated blood (sheep, rabbit or horse). It is used for primary plating andsubculturing, especially to determine bacterial haemolysis. (09 Oct 1997) |
| blood-air barrier | The barrier between capillary blood and alveolar air comprising the alveolar epithelium and capillary endothelium with their adherent basement membranes and epithelial cell cytoplasm. Gaseous exchange occurs across this membrane. (12 Dec 1998) |