| neutralization test | A test to determine the antimicrobial activity of a serum by inoculating a susceptible animal with a mixture of the serum and the virus or other microbe being tested. Synonym: neutralization test. (05 Mar 2000) |
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| neutralization | 1. The act or process of neutralising, or the state of being neutralized. 2. <chemistry> The act or process by which an acid and a base are combined in such proportions that the resulting compound is neutral. See Neutral. Origin: Cf. F. Neutralisation. Source: Websters Dictionary (01 Mar 1998) |
| neutralization plate | A metal plate used for the internal fixation of a long bone fracture to neutralise the forces producing displacement. (05 Mar 2000) |
| neutralization tests | Titration of an antiserum by testing a series of dilutions of virus or immune serum to a given end-point, which is generally the dilution at which tissue cultures inoculated with the serum-virus mixtures demonstrate cytopathology (cpe) or the dilution at which 50% of test animals injected with serum-virus mixtures show infectivity (id50) or die (ld50). (12 Dec 1998) |
| Schick test toxin | Corynebacterium diphtheriae toxin diluted so that the inoculated dose (0.1 or 0.2 ml) will contain 1/50 th of guinea pig minimal lethal dose. See: Schick test. Synonym: diagnostic diphtheria toxin. (05 Mar 2000) |
| Dick test toxin | A culture filtrate of lysogenised group A strains of beta-haemolytic streptococci, erythrogenic when inoculated into the skin of susceptible persons, and neutralised by antibodies that appear during scarlet fever convalescence; three immunological types (A, B, and C) are recognised. Synonym: Dick test toxin, erythrogenic toxin, scarlet fever erythrogenic toxin. (05 Mar 2000) |
| animal toxin | <pharmacology> Any poisonous substance (including but not limited to venom) produced by an animal. (11 May 1997) |
| anthrax toxin | A culture filtrate of Bacillus anthracis containing an exotoxin with at least three different antigenically distinct components: oedema factor, lethal factor, and protective antigen. Synonym: Bacillus anthracis toxin. (05 Mar 2000) |
| Bacillus anthracis toxin | A culture filtrate of Bacillus anthracis containing an exotoxin with at least three different antigenically distinct components: oedema factor, lethal factor, and protective antigen. Synonym: Bacillus anthracis toxin. (05 Mar 2000) |
| bacterial toxin | Any intracellular or extracellular toxin formed in or elaborated by bacterial cells. (05 Mar 2000) |
| bee toxin | The toxin delivered by a bee sting; contains three active principles: biogenic amines, active peptides, and certain hydrolytic enzymes. (05 Mar 2000) |
| botulinum toxin | <protein> Neurotoxin (50 kD, 7 distinct serotypes) produced by certain strains of Clostridium botulinum. The bacterium produces the toxin as a complex with a haemagglutinin that prevents toxin inactivation in the gut. Proteolysis in the body results in cleavage into two fragments A and B. B binds to gangliosides and may stimulate the endocytosis of fragment A. See: synaptobrevin, tetanus toxin. (18 Nov 1997) |
| botulinum toxin type a | <chemical> A neurotoxin produced by clostridium botulinum. When consumed in contaminated food it can cause paralysis and death. In its purified form, it has been used in the treatment of blepharospasm and strabismus. Pharmacological action: neuromuscular agents. (12 Dec 1998) |
| botulinus toxin | A potent neurotoxin from Clostridium botulinum. Synonym: botulin, botulismotoxin. (05 Mar 2000) |
| botulism toxin | <protein> A toxic byproduct of Clostridium Botulinum that is responsible for the food-borne illness known as botulism. (27 Sep 1997) |