(1) In addition to oncogenes, the transferred DNA contains genes that direct the synthesis and exudation of opines, which are used as nutrients by the bacteria.
(2) The pH gradient measured with dimethyloxazolidine-2,4-dione and acetylsalicylic acid was very small in both bacteria at a high pH above 8, and was not affected significantly by the addition of CCCP.
(3) The causative organisms included viruses, fungi, and bacteria of both high and low pathogenicity.
(4) Anaerobes, in particular Bacteroides spp., are the predominant bacteria present in mixed intra-abdominal infections, yet their critical importance in the pathogenicity of these infections is not clearly defined.
(5) During the digestion of these radiolabeled bacteria, murine bone marrow macrophages produced low-molecular-weight substances that coeluted chromatographically with the radioactive cell wall marker.
(6) The authors conclude that H. pylori alone causes little or no effect on an intact gastric mucosa in the rat, that either intact organisms or bacteria-free filtrates cause similar prolongation and delayed healing of pre-existing ulcers with active chronic inflammation, and that the presence of predisposing factors leading to disruption of gastric mucosal integrity may be required for the H. pylori enhancement of inflammation and tissue damage in the stomach.
(7) Thirty-two strains of pectin-fermenting rumen bacteria were isolated from bovine rumen contents in a rumen fluid medium which contained pectin as the only added energy source.
(8) This capacity is expressed during incubation of the bacteria with the substrate and needs a source of carbon and other energy metabolites.
(9) Preincubation of the bacteria at 56 degrees C for 30 minutes and ultraviolet irradiation resulted in a noticeable decrease in adherence.
(10) An sdh-specific transcript of about 3,450 nucleotides was detected in vegetative bacteria.
(11) The authors present the first results on the utilization of fish infusion (IFP) as a basic medium for the cultivation of bacteria.
(12) Phospholipid changes occurring at later stages in the lytic cycle of infected bacteria are more prominent than those at earlier time intervals.
(13) The most commonly encountered organisms were aerobic bacteria (91%), anaerobes (74%), and fungi (48%).
(14) Resistance to antibiotics have been detected in food poisoning bacteria, namely Salmonella typhimurium, Staphylococcus aureus and Clostridium perfringens.
(15) Bacteria can stop or lessen antibodies synthesis process.
(16) Among the agents triggering such an infection Chlamydia (30.9% of the cases of non-gonorrhoic urethritis), as well as mycoplasma, ureaplasma, anaerobic bacteria and herpes simplex viruses have gained particular significance.
(17) Mu does not grow lytically in or kill him bacteria but can lysogenize such hosts.
(18) Tunnel-like formations at different depths of the oral epithelium contained higher numbers of bacteria than those seen on the adjacent oral surface.
(19) The cells were taken from cultures in low-density balanced exponential growth, and the experiments were performed quickly so that the bacteria were in a uniform physiological state at the time of measurement.
(20) Subgingival plaque was sampled and the presence or absence of the above mentioned bacteria assessed with BANA reagent cards (Perio Scan).
Parasite
Definition:
(n.) One who frequents the tables of the rich, or who lives at another's expense, and earns his welcome by flattery; a hanger-on; a toady; a sycophant.
(n.) A plant obtaining nourishment immediately from other plants to which it attaches itself, and whose juices it absorbs; -- sometimes, but erroneously, called epiphyte.
(n.) A plant living on or within an animal, and supported at its expense, as many species of fungi of the genus Torrubia.
(n.) An animal which lives during the whole or part of its existence on or in the body of some other animal, feeding upon its food, blood, or tissues, as lice, tapeworms, etc.
(n.) An animal which steals the food of another, as the parasitic jager.
(n.) An animal which habitually uses the nest of another, as the cowbird and the European cuckoo.
Example Sentences:
(1) The rise of malaria despite of control measures involves several factors: the house spraying is no more accepted by a large percentage of house holders and the alternative larviciding has only a limited efficacy; the houses of American Indians have no walls to be sprayed; there is a continuous introduction of parasites by migrants.
(2) However, ticks, which failed to finish their feeding and represent a disproportionately great part of the whole parasite's population, die together with them and the parasitic system quickly restores its stability.
(3) One thousand nineteen Wyoming ground squirrels (Spermophilus elegans elegans) from 4 populations in southern Wyoming were examined for intestinal parasites.
(4) Ten or 4% of the administered parasites passed in the feces during the 3 days following the first or second infection, but 32% after the third infection.
(5) However, the degree of inhibition of parasite replication after exposure to rMu-GM-CSF was not as great as after treatment with rMu-IFN-gamma, and much more rMu-GM-CSF than rMu-IFN-gamma was required to achieve an equivalent antimicrobial effect.
(6) Filipin-induced lesions in glutaraldehyde-fixed parasites indicated higher levels of beta-hydroxysterols in the amastigote than in the promastigote plasma membrane, and in the promastigote flagellar membrane than in the body membrane.
(7) The propionyl-CoA condensing enzyme which catalyzes the first step in the biosynthesis of 2-methylbutyrate and 2-methylvalerate by Ascaris muscle appears to exist in at least three forms in the mitochondria of this parasitic nematode.
(8) The time to recovery of full consciousness, time to parasite clearance, and mortality were examined with Cox proportional-hazards regression analysis.
(9) In addition, a redistribution of cellular controls of the host reaction to parasites may act as a complementary mechanism for establishment of the viable equilibrium between host and parasite.
(10) symptoms, bowel habits, normal physical examination, absence of intestinal infections or parasites) b) physiopathological evaluation (hyperactivity of the distal colon, hypersensitivity to stimuli, stress), and c) physiological evaluation of the patient.
(11) Parasite antigen was present in sera from all infected animals before treatment.
(12) We have found intrathrombocytic parasites of Plasmodium vivax (in 10% of men naturally infected) and P berghei (in 53% of mice experimentally infected); these were both merozoites and trophozoites.
(13) they are shown to inhibit in vitro the release of iron from acidified host cell cytosol, consisting mostly of hemoglobin, a process that could provide this trace element to the parasite.
(14) Phagocytosis of normal or parasitized red cells was not observed.
(15) A radical rearrangement of the organism occurred gradually: initially oval in shape, the parasite became round, then elongated, flattened, and underwent cytokinesis.
(16) The parasites were highly aggregated within the study community, with most people harbouring low burdens while a few individuals harboured very heavy burdens.
(17) Discovery of this vectorhost-parasite system in the Americas, and the localization of promastigote flagellates (leptomonads) in the hindgut of the vector, should assist in clarifying interpretative problems associated with infection of wild-caught flies in studies on leishmaniasis in the Americas and elsewhere.
(18) At the external wall of the host's gut, parasitic cysts of this nematode with immature stages inside were also observed.
(19) All three parasite lines required sialic acid for optimal invasion, but Thai-2 parasites cultured in Tn erythrocytes invaded neuraminidase-treated erythrocytes with 45% efficiency whereas Camp parasites invaded neuraminidase-treated erythrocytes with less than 10% efficiency.
(20) Pretreatment of G6PD(+) cells with ascorbate caused a slight enhancement in parasite development, while in G6PD(-) cells a suppressive effect on the plasmodia was demonstrated.