(n.) A microscopic vegetable organism, belonging to the class Algae, usually in the form of a jointed rodlike filament, and found in putrefying organic infusions. Bacteria are destitute of chlorophyll, and are the smallest of microscopic organisms. They are very widely diffused in nature, and multiply with marvelous rapidity, both by fission and by spores. Certain species are active agents in fermentation, while others appear to be the cause of certain infectious diseases. See Bacillus.
Example Sentences:
(1) After Listeria, a bacterium, is phagocytosed by a macrophage, it dissolves the phagosomal membrane and enters the cytoplasm.
(2) These results suggest that the bacterium may not play an important pathogenetic role in ulcer healing and relapse, when patients are managed using an H2-blocker.
(3) Three strains of fluorescent pseudomonads (IS-1, IS-2, and IS-3) isolated from potato underground stems with roots showed in vitro antibiosis against 30 strains of the ring rot bacterium Clavibacter michiganensis subsp.
(4) Microbiological analyses of sediments located near a point source for petrogenic chemicals resulted in the isolation of a pyrene-mineralizing bacterium.
(5) However, the amino acid sequence of the enzyme from the bacterium exhibited low identities (25-30%) with the same enzyme from eukaryotes.
(6) The cytoplasm and the periplasma of the gram-negative facultative photosynthetic bacterium Rhodopseudomonas sphaeroides contain phospholipid transfer proteins; these seem to be involved in the biosynthesis of prokaryotic membranes.
(7) in all of the clinical groups studied suggests that this bacterium is not a good marker of periodontal disease and that it is necessary to define the most characteristic phenotypes and genotypes.
(8) Mössbauer spectroscopy has been used to study the heme iron in various states of cytochrome P450cam from the camphor-hydroxylating system of the bacterium Pseudomonas putida.
(9) We examined the predacious gram-negative bacterium Bdellovibrio bacteriovorous 109J and free-living strains 109J-A1 and 109J-KA1 derived therefrom for penicillin-binding proteins (PBPs).
(10) The enzyme hydrogenase, from the photosynthetic bacterium Chromatium, was purified to homogeneity after solubilization of the particulate enzyme with deoxycholate.
(11) The 3-ketoglycose-synthesizing system in the bacterium does not affect the relative participation of these two pathways.
(12) We have isolated a mutant of the luminous bacterium Beneckea harveyi, which requires exogenous adenosine 3',5'-monophosphate (cyclic AMP) to synthesize luciferase and emit light.
(13) Of the major metabolic processes investigated in this bacterium, only de novo synthesis of the cell envelope was inhibited by lombazole well in advance of an effect on growth.
(14) Allo-deoxycholic acid was formed only in cell extracts prepared from bacteria induced by cholic acid, suggesting that their formation may be a branch of the cholic acid 7 alpha-dehydroxylation pathway in this bacterium.
(15) Crude extracts from aerobically grown bacterium Klebsiella pneumoniae contain three different types of catalases, designated KpT, KpCP, and KpA, whose activities in crude extracts are in the ratio 4.1:1:0.3.
(16) Nitrendipine, verapamil, LaCl3 and omega-conotoxin were tested and these blockers inhibited chemotactic behaviour in the bacterium toward L-alanine.
(17) After several rounds, the scientists had pieced together all 1m letters of the bacterium's genome.
(18) An assay for the determination of NAD(P)+ and NAD(P)H in extracts from the obligate anaerobe bacterium Thermoanaerobacter finnii is developed and the strategy for this development is described.
(19) The bacterium produces unique, branched-chain fatty acids, catalase, oxidase (weakly), and gelatinase and uses starch while ignoring other carbohydrates.
(20) Previous studies have demonstrated that human salivary alpha-amylase specifically binds to the oral bacterium Streptococcus gordonii.
Cholera
Definition:
(n.) One of several diseases affecting the digestive and intestinal tract and more or less dangerous to life, esp. the one commonly called Asiatic cholera.
Example Sentences:
(1) The simultaneous administration of the yellow fever vaccine did not influence the titre of agglutinins induced by the classic cholera vaccine.
(2) It could be demonstrated by radioimmune precipitation of virus labeled with[35S]methionine that all three polypeptides are specific for hog cholera virions.
(3) The phosphorylation pattern was affected by the addition of cholera toxin or GDP beta S to the isolated nuclei.
(4) Cholera toxin-catalysed ADP-ribosylation identified two forms of Gs alpha-subunits whose labelling was about 4-fold greater in membranes from diabetic animals compared with those from lean animals.
(5) The studies reported here examined physical interactions between V. cholerae O1 and natural plankton populations of a geographical region in Bangladesh where cholera is an endemic disease.
(6) Interestingly, different mechanisms of nucleated and non-nucleated TC directed lysis by CD4+ effectors were implied by distinct patterns of sensitivity to cholera toxin (CT) and cyclosporin A (CsA).
(7) The simultaneous expression of hemolytic and toxinogenic properties by the same V. cholerae strains is discussed.
(8) All these strains produced an enterotoxic principle, antigenically related to cholera coli family of enterotoxins, as detected by latex agglutination and immuno-dot-blot tests.
(9) The binding of radioidinated cholera toxin on its solidified antibody was inhibitable by unlabeled cholera toxin and cholera toxin antibody.
(10) A state of net secretory fluid flux was induced in isolated jejunal loops in weanling pigs by adding theophylline or cholera toxin to the lumen of the isolated loops.
(11) Cholera toxin reduced absorption of water and electrolytes progressively over four hours and induced secretion in a dose dependent fashion.
(12) The results of this study clearly demonstrated that an increase in cAMP levels via cholera toxin treatment causes enhanced growth (in vitro and in vivo) of estrogen-receptor-positive and -negative human breast carcinoma cells and, although estrogen alone was not mitogenic to the estrogen-receptor-positive breast carcinoma cells in vitro, the steroid was mitogenic to these cells in the presence of elevated cellular cAMP levels.
(13) Isolates from patients who failed to clear the organism from their stools or who had cholera soon after tetracycline prophylaxis had increased minimum inhibitory concentrations of the drug.
(14) In the present work by the method of molecular DNA hybridization there was shown a low degree of affinity of the standard museum strains of cholera vibrios to the respresentatives of the sea species V. parahaemolyticus and V. alginolyticus, and also halophilic vibrios identified earlier on the basis of phenotypical characteristics of the nucleotide DNA composition as Marinovibrio.
(15) Our data showed that V. cholerae 01 was the most frequently (40%) isolated enteropathogen during the epidemics.
(16) Nitrogen mustard (N2M) treatment of rabbits induced neutropenia, and, in ligated ileal loops, it inhibited fluid secretion induced by salmonella or by cholera toxin (CT).
(17) An oral glucose electrolyte solution is often used in place of intravenous therapy in diarrheal diseases caused by Vibrio cholerae, enterotoxigenic E. coli, and undiagnosed watery diarrheal diseases.
(18) IFN-beta induced more enhanced NK cytotoxicity of normal lymphocytes when frozen tumor target cells were cultured for 4-5 days in the medium, or when these cells were treated with Vibrio cholerae neuraminidase (VCN).
(19) V cholerae O1, biotype El Tor, serotype Inaba, was isolated from three city water samples.
(20) The gene clusters that determine the biosynthesis of both the Inaba and Ogawa serotypes of the O antigen of the lipopolysaccharide of Vibrio cholerae were cloned and expressed in Escherichia coli K-12.