| sulfur oxygenase reductase | <enzyme> From desulfurolobus ambivalens; in the presence of oxygen but not under a hydrogen atmosphere simultaneously produces sulfite, thiosulfate, and hydrogen sulfide from sulfur; inhibited by sulfhydryl reagents, fad, ferrous and ferric ions Registry number: EC 1.8.- Synonym: sor gene product (sulfur oxygenase reductase) (26 Jun 1999) |
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| sulfur radioisotopes | Unstable isotopes of sulfur that decay or disintegrate spontaneously emitting radiation. S 29-31, 35, 37, and 38 are radioactive sulfur isotopes. (12 Dec 1998) |
| sulfur-reducing bacteria | A group of gram-negative, anaerobic bacteria that is able to oxidise acetate completely to carbon dioxide using elemental sulfur as the electron acceptor. (12 Dec 1998) |
| sulfur trioxide | SO3;forms sulfuric acid, H2SO4, by its reaction with water. Synonym: sulfuric oxide. (05 Mar 2000) |
| sulfur water | A water containing hydrogen sulfide or the metallic sulfides. (05 Mar 2000) |
| iron-sulfur proteins | A group of proteins possessing only the iron-sulfur complex as the prosthetic group. These proteins participate in all major pathways of electron transport: photosynthesis, respiration, hydroxylation and bacterial hydrogen and nitrogen fixation. (12 Dec 1998) |
| technetium tc 99m sulfur colloid | <chemical> A gamma-emitting radionuclide imaging agent used for the diagnosis of diseases in many tissues, particularly in the gastrointestinal system, liver, and spleen. Pharmacological action: radiopharmaceuticals. (12 Dec 1998) |
| flowers of sulfur | Used in preparing sulfur ointment and in the treatment of various skin disorders. Synonym: flowers of sulfur. (05 Mar 2000) |
| liver of sulfur | A mixture composed chiefly of potassium polysulfides and potassium thiosulfate; used externally in scabies, acne, and psoriasis; used in the manufacture of "white lotion". Synonym: liver of sulfur. (05 Mar 2000) |
| ackee poisoning | An acute and frequently fatal vomiting disease associated with central nervous system symptoms and marked hypoglycaemia, caused by eating unripe ackee fruit of Blighia spaida, a tree common in Jamaica. Synonym: Jamaican vomiting sickness. (05 Mar 2000) |
| arsenic poisoning | A severe poisoning that occurs after the exposure (ingested or inhaled). Signs and symptoms include: nausea, vomiting, diarrhoea, rapid heart rate, apprehension and difficulty breathing. (27 Sep 1997) |
| bacterial food poisoning | A term commonly used to refer to conditions limited to enteritis or gastroenteritis (excluding the enteric fevers and the dysenteries) caused by bacterial multiplication per se or by a soluble bacterial exotoxin. (05 Mar 2000) |
| blister beetle poisoning | Poisoning, most often of horses, by ingestion of blister beetles (Epicauta spp.) in hay; the causative toxin is cantharidin, which produces salivation, shock, pollakiuria, and colic. (05 Mar 2000) |
| blood poisoning | See: septicaemia, pyaemia. (05 Mar 2000) |
| bracken poisoning | A disease of cattle caused by long-term, low-level consumption of the bracken fern (Pteridium aquilinum) and characterised by haemorrhages or tumours in the bladder. Synonym: bracken poisoning. (05 Mar 2000) |