| dRVVT | dilute Russell viper venom time |
|---|---|
| RV | random variable; rat virus; Rauscher virus; rectovaginal; reinforcement value; renal vein; residual ... |
| RVV | right ventricular volume; rubella vaccine-like virus; Russell viper venom |
| RVVT | Russell viper venom time |
| VRV | ventricular residual volume; viper retrovirus |
| DRVVT | Dilute Russel Viper Venom Time |
|---|---|
| RVV | Russel Viper Venom |
| viper venoms | Venoms from snakes of the viperid family. They tend to be less toxic than elapid or hydrophid venoms and act mainly on the vascular system, interfering with coagulation and capillary membrane integrity and are highly cytotoxic. They contain large amounts of several enzymes, other factors, and some toxins. (12 Dec 1998) |
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| viper | 1. <zoology> Any one of numerous species of Old World venomous makes belonging to Vipera, Clotho, Daboia, and other genera of the family Viperidae. "There came a viper out of the heat, and fastened on his hand." (Acts xxviii. 3) Among the best-known species are the European adder (Pelias berus), the European asp (Vipera aspis), the African horned viper (V. Cerastes), and the Indian viper (Daboia Russellii). 2. A dangerous, treacherous, or malignant person. "Who committed To such a viper his most sacred trust Of secrecy." (Milton) Horned viper. <zoology> A small, slender, phosphorescent deep-sea fish (Chauliodus Sloanii). It has long ventral and dorsal fins, a large mouth, and very long, sharp teeth. <botany> Viper's bugloss, a perennial composite herb (Scorzonera Hispanica) with narrow, entire leaves, and solitary heads of yellow flowers. The long, white, carrot-shaped roots are used for food in Spain and some other countries. Synonym: viper grass. Origin: F. Vipere, L. Vipera, probably contr. Fr. Vivipera; vivus alive + parere to bring forth, because it was believed to be the only serpent that brings forth living young. Cf. Quick, Parent, Viviparous, Wivern, Weever. Source: Websters Dictionary (01 Mar 1998) |
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| russell's viper | A genus of snakes of the family viperidae. It is distributed in west pakistan, most of india, burma, ceylon, thailand, southeast china, taiwan, and a few islands of indonesia. It hisses loudly when disturbed and strikes with great force and speed. Very prolific, it gives birth to 20-60 young. This viper is the leading cause of snakebite in india and burma. (moore: poisonous snakes of the world, 1980, p127) (12 Dec 1998) |
| Russell's viper venom | A venom used as a coagulant in the arrest of haemorrhage from accessible sites in haemophilia. (05 Mar 2000) |
| Russell's viper venom clotting time | A clotting time determination performed on citrated platelet-poor plasma using Russell's viper venom as an activating agent. This allows activation of factor X directly without the need for other coagulation factors and is used to confirm factor X defects. See: Stypven time test. (05 Mar 2000) |
| water viper | <zoology> See Water moccasin. Source: Websters Dictionary (01 Mar 1998) |
| amphibian venoms | Venoms produced by frogs, toads, salamanders, etc. The venom glands are usually on the skin of the back and contain cardiotoxic glycosides, cholinolytics, and a number of other bioactive materials, many of which have been characterised. The venoms have been used as arrow poisons and include bufogenin, bufotoxin, bufagin, bufotalin, histrionicotoxins, and pumiliotoxin. (12 Dec 1998) |
| ant venoms | Venoms from the superfamily formicoidea, ants. They may contain protein factors and toxins, histamine, enzymes, and alkaloids and are often allergenic or immunogenic. (12 Dec 1998) |
| arthropod venoms | Venoms from animals of the phylum arthropoda. Those most investigated are from scorpions and spiders of the class arachnidae and from ant, bee, and wasp families of the insecta order hymenoptera. The venoms contain protein toxins, enzymes, and other bioactive substances and may be lethal to man. (12 Dec 1998) |
| bee venoms | Venoms obtained from apis mellifera (honey bee) and related species. They contain various enzymes, polypeptide toxins, and other substances, some of which are allergenic or immunogenic or both. These venoms were formerly used in rheumatism to stimulate the pituitary-adrenal system. (12 Dec 1998) |
| venoms | Poisonous animal secretions forming fluid mixtures of many different enzymes, toxins, and other substances. These substances are produced in specialised glands and secreted through specialised delivery systems (nematocysts, spines, fangs, etc.) for disabling prey or predator. (12 Dec 1998) |
| cnidarian venoms | Venoms from jellyfish, coral, sea anemone, nematocysts, etc. They contain haemo-, cardio-, dermo- , and neurotoxic substances and probably enzymes. They include palytoxin, sarcophine, and anthopleurine. (12 Dec 1998) |
| cobra venoms | Venoms from snakes of the genus naja (family elapidae). They contain many specific proteins that have cytotoxic, haemolytic, neurotoxic, and other properties. Like other elapid venoms, they are rich in enzymes. They include cobramines and cobralysins. (12 Dec 1998) |
| mollusk venoms | Venoms from mollusks, including the conus and octopus species. The venoms contain proteins, enzymes, choline derivatives, slow-reacting substances, and several characterised polypeptide toxins that affect the nervous system. Mollusk venoms include cephalotoxin, venerupin, maculotoxin, surugatoxin, conotoxins, and murexine. (12 Dec 1998) |
| wasp venoms | Venoms produced by the wasp (vespid) family of stinging insects, including hornets; the venoms contain enzymes, biogenic amines, histamine releasing factors, kinins, toxic polypeptides, etc., and are similar to bee venoms. (12 Dec 1998) |
| scorpion venoms | Venoms from animals of the order scorpionida of the class arachnida. They contain neuro- and haemotoxins, enzymes, and various other factors that may release acetylcholine and catecholamines from nerve endings. Of the several protein toxins that have been characterised, most are immunogenic. (12 Dec 1998) |
Synonyms : Cerastes Venom, Cerastes Venoms, Egyptian Sand Viper Venom, Viper Venom, Viperotoxin, Venom, Cerastes, Venom, Viper, Venoms, Cerastes, Venoms, Viper
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