| anisotropic disks | The dark-staining anisotropic cross striations in the myofibrils of muscle fibres, comprising regions of overlapping thick (myosin) and thin (actin) filaments. Synonym: A disks, anisotropic disks, Q bands, Q disks. (05 Mar 2000) |
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| anisotropic lipid | A lipid in the form of doubly refractive droplets. (05 Mar 2000) |
| anisotropic membrane | This type of synthetic membrane has an asymmetric pore structure: a thinfilm with tight pores backed by a thicker film with wider pores. Thistype of membrane is used for ultrafiltration andreverse osmosis, the porous side faces the feed stream and the tight-pored side faces the product stream. (09 Oct 1997) |
| anisotropine methylbromide | 8-Methyltropinium bromide 2-propylvalerate;an anticholinergic and intestinal antispasmodic. (05 Mar 2000) |
| anisotropy | <radiobiology> Term used to describe a medium whose characteristic properties vary with direction of travel through the medium. (for example, velocity of light transmission, conductivity of heat or electric current, compressibility, etc.) Annihilation of magnetic field & Anode (09 Oct 1997) |
| anistreplase | <chemical> An acylated inactive complex of streptokinase and human lysine-plasminogen. After injection, the acyl group is slowly hydrolyzed, producing an activator that converts plasminogen to plasmin, thereby initiating fibrinolysis. Its half-life is about 90 minutes compared to 5 minutes for tpa (tissue plasminogen activator), 16 minutes for urokinase and 23 minutes for streptokinase. If treatment is initiated within 3 hours of onset of symptoms for acute myocardial infarction, the drug preserves myocardial tissue and left ventricular function and increases coronary artery patency. Bleeding complications are similar to other thrombolytic agents. Pharmacological action: fibrinolytic agent, plasminogen activator. Chemical name: Anistreplase (12 Dec 1998) |