(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.
Streptococcus
Definition:
(n.) A long or short chain of micrococci, more or less curved.
Example Sentences:
(1) However, after the cessation of this treatment Streptococcus viridans grew in her blood again.
(2) The complete nucleotide sequence of the gene for a cell surface protein antigen (SpaA) of Streptococcus sobrinus MT3791 (serotype g) was determined.
(3) The amount of intracellular, iodophilic, glycogen-like polysaccharide (IPS) present in cells of two strains of Streptococcus mutans at various stages of growth in a chemically defined medium was determined by quantitative electron microscopy.
(4) Cultures of Streptococcus mutans HS-6, OMZ-176, Ingbritt C, 6715-wt13, and pooled human plaque were grown in trypticase soy media with or without 1% sucrose.
(5) The reaction components and conditions affecting CAMP factor (Streptococcus agalactiae) induced lysis of target cells have been investigated.
(6) The erm gene from L. reuteri was shown to be related to the erm gene from pIP501 (Streptococcus agalactiae) by DNA-DNA hybridization.
(7) Two patients are described in whom Streptococcus bovis bacteremia was the only clue to the presence of a colonic neoplasm.
(8) Presented are the clinical, pathologic, and virulence features of sudden death due to Group A beta-hemolytic streptococcus.
(9) N10-Methyl-5,8-dideaza-5,6,7,8-tetrahydrofolate (2) exhibited the most potent antifolate activity against L. casei (IC50 = 2.8 nM) and Streptococcus faecium (IC50 = 0.57 nM).
(10) Sterile vegetations were produced in rabbits by placing catheters in the inferior vena cava, tricuspid or aortic valves, and thoracic or abdominal aorta and then were infected by the intravenous inoculation of Streptococcus sanguis.
(11) Streptococcus faecalis grown with glucose as the primary energy source contains a single, nicotinamide adenine dinucleotide phosphate (NADP)-specific 6-phosphogluconate dehydrogenase.
(12) In addition to detecting three major antigenic variants of malic enzyme within this group, both antisera readily reacted with Streptococcus faecalis malic enzyme.
(13) Streptococcus B was the microorganism most frequently isolated (26.7%), followed by S. epidermidis (19.8%), E. coli (13.7%) and S. aureus (10.68%).
(14) The type-specific cell wall polysaccharide antigen was extracted, purified, and characterized from type f Streptococcus mutans strain OMZ175 and MT557.
(15) A regimen of a single intramuscular dose of penicillin G-streptomycin was compared with regimens of three oral doses of amoxicillin and two oral doses of penicillin V to prevent Streptococcus sanguis endocarditis in rabbits with experimentally induced valvular heart lesions.
(16) No chemical or immunological differences were observed in the cell wall carbohydrate of the noncapsulated streptococcus, 89R50, and that of its capsulated progenitor.
(17) Group D Streptococcus, both enterococci and nonenterococci, should be considered pathogenic in the neonate until proved otherwise.
(18) The pH effect on the nisine biosynthesis during the cultivation of Streptococcus lactis was studied at pH 5,8 6,7 and 7,2.
(19) Pneumonococcus accounted for 50 per cent, and streptococcus for 15 per cent of infections; there was one episode each of Haemophilus influenzae and meningococcus; in 25 per cent, no organism was isolated.
(20) Intra-amniotic infection (six of 16 versus 26 of 120) and endometritis (four of ten versus three of 94) were significantly more common in group B streptococcus patients.