| REP | <radiobiology, unit> A roentgen equivalent physical is a unit of absorbed radiation approximately equivalent to a roentgen, an international unit of x- or gamma-radiation. An obsolete unit of measurement; that quantity of ionizing radiation of any kind which, upon absorption by living tissue, produces an energy gain per gram of tissue equivalent to that produced by 1 roentgen of X-rays or gamma-rays. Acronym: rep See: rad. (05 Mar 2000) |
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| rep protein | <protein> A protein that triggers a plasmid's replication. An acronym for Repetitive Extragenic Palindromicprotein, this protein is an enzyme produced by a mutant strain of E. Coli that unwinds the DNA helix. (09 Oct 1997) |
| rep-silver | Money anciently paid by servile tenants to their lord, in lieu of the customary service of reaping his corn or grain. See: Reap. Source: Websters Dictionary (01 Mar 1998) |
| RNA, transfer, ser | A transfer RNA which is specific for carrying serine to sites on the ribosomes in preparation for protein synthesis. (12 Dec 1998) |
| SER | <cell biology> An internal membrane structure of the eukaryotic cell. Biochemically similar to the rough endoplasmic reticulum, but lacks the ribosome binding function. Tends to be tubular rather than sheet like, may be separate from the rough endoplasmic reticulum or may be an extension of it. Abundant in cells concerned with lipid metabolism and proliferates in hepatocytes when animals are challenged with lipophilic drugs. Acronym: SER (18 Nov 1997) |
| UDP-GlcNAc - Ser-protein N-acetylglucosamine-1-phosphotransferase | <enzyme> Catalyses the transfer of n-acetylglucosamine-1-phosphate residues from udp-glcnac to serine units in proteins Registry number: EC 2.7.8.- Synonym: glcnac-1-p-ser transferase (26 Jun 1999) |
| megacolon, toxic | Acute dilatation of the colon associated with amebic or ulcerative colitis. The dilatation may precede perforation of the colon. (12 Dec 1998) |
| goiter, diffuse toxic | Graves' disease, the most common cause of hyperthroidism, too much thyroid hormone. (12 Dec 1998) |
| goiter, toxic multinodular | Condition in which the thyroid gland contains multiple lumps (nodules) that are overactive and produce excess thyroid hormones. This condition is also known as Parry's disease or Plummer's disease. (12 Dec 1998) |
| plants, toxic | Plants or plant parts which are harmful to man or other animals. (12 Dec 1998) |
| hepatitis, toxic | Acute hepatitis caused by true hepatotoxins such as amanita phaloides toxin, carbon tetrachloride, yellow phosphorus, and a variety of drugs. (12 Dec 1998) |
| shock, toxic | See Syndrome, toxic shock. (12 Dec 1998) |
| syndrome, toxic shock | A grave condition occurring predominantly in menstruating women using tampons, toxic shock is characterised by a highly toxic state (with sudden high fever, vomiting, diarrhoea, muscle aching) followed by low blood pressure (hypotension) which can lead to shock (and death). There may be a rash resembling sunburn with peeling of skin. The channing laboratory in boston under dr. Edw. Kass discovered that toxic shock was due to a toxin produced by staph (staphylococcus) aureus bacteria growing under conditions with little or no oxygen. The syndrome occurs rarely in women not using tampons and in men. (12 Dec 1998) |
| drugs toxic to lung | <radiology> Bleomycin, methotrexate, cytoxan, amiodarone (12 Dec 1998) |
| toxic | Pertaining to, due to or of the nature of a poison or toxin, manifesting the symptoms of severe infection. (18 Nov 1997) |