(1) Using PAB-lacZ gene fusions, it was found that the stb operon is autoregulated.
(2) Colony hybridizations with DNA probes for 3 heat-stable (STaP, STaH, and STb) enterotoxins and 1 heat-labile (LT) enterotoxin and for 4 adhesins (K99, F41, K88, 987P) were performed on 870 Escherichia coli isolates to determine pathotypes prevalent among enterotoxigenic E coli (ETEC) isolated from cattle in Belgium.
(3) We also examined adult human ileal mucosa for responses to STb in the Ussing chamber in vitro.
(5) aeruginosa in Sensitivity Test Broth (STB) and human urine.
(6) A two-factor varimax solution yielded a first factor accounting for 49 per cent of total unrotated variance with high (0.70 to 0.91) loadings from Hallucinatory predisposition, Perceptual aberration, Schizophrenism, STA and STB scales, and was interpreted as reflecting a general factor of schizoid personality disorder.
(7) Anti-STb3-27 antibodies were affinity purified on a synthetic peptide-Sepharose 4B column and used in a direct-binding STb ELISA.
(8) Therefore, exposure of swine jejunum to STb induced structural alterations in intestinal mucosa (ie, loss of villous absorptive cells and partial atrophy of villi) that were consistent with those causing compromised absorptive capacity.
(9) Presence of Escherichia coli enterotoxin genes LT (heat-labile enterotoxin), STaP (heat-stable enterotoxin a, porcine genotype), STaH (heat-stable enterotoxin a, human genotype), and STb (heat-stable enterotoxin b) among 874 swine isolates of E coli was determined, using DNA probes and the DNA colony hybridization technique.
(10) Sucrase activity was also lower (about 15%) in STb loops than in control loops (P less than 0.01).
(11) Some 2 microns variants (e.g., 4110-2 microns and 4108-2 microns) had an altered number of 125-bp consensus repeats at STB.
(12) The pig intestinal loop (PIL) assay, inhibition enzyme-linked immunosorbent assay (ELISA), and DNA hybridization assay were compared for analysis of Escherichia coli heat-stable enterotoxin b (STb) on 201 porcine E. coli strains.
(13) Two ligated intestinal loops in each of twelve 3-week-old pigs were exposed for 2 hours to sterile E coli culture filtrates from each of the following strains: 431 (STa-producing), 1261 (STa and STb-producing), and 1790 (STb-producing); recombinant strain HB101-pRAS-1 (STb-producing); the nontoxigenic K-12 variant HB101; or trypticase soy broth.
(14) Proteolytic conversion of pre-STB to STB was shown to be inhibited by the proton motive force uncoupler carbonyl cyanide m-chlorophenylhydrazone and did not occur in a secA background.
(15) These results suggest that STb-producing E. coli strains are not a major cause of diarrheal illness in humans.
(16) However, the corresponding region of 7754-2 microns has only approximately 70% nucleotide sequence homology with the 125-bp STB consensus repeat.
(17) STb-PhoA was purified from an expressed bacterial lysate by preparative isoelectric focusing.
(18) Structural and functional characteristics indicate that ST peptides are heterogeneous and two major subtypes, STa and STb, have been identified.
(19) Pharmacokinetics of cis-(-)-2,3,4,4a,5,9b-hexahydro-2,8-dimethyl- 1H-pyrido-[4,3-b]indole dihydrochloride (Stobadin; in the following briefly called STB), a pharmacologically active stereoisomer of the gamma-carboline carbidine, was studied using a 3H-labelled product.
(20) Results of initial studies of the expression of Mx-STb in COS-1 cells indicate that the expressed protein displays characteristic Mx-ST and p-nitrophenol sulfotransferase activity, is recognized by rabbit polyclonal antibodies raised against pure rat liver Mx-ST, and migrates at approximately 35,000 Da during sodium dodecyl sulfate-polyacrylamide gel electrophoresis.
Swim
Definition:
(v. i.) To be supported by water or other fluid; not to sink; to float; as, any substance will swim, whose specific gravity is less than that of the fluid in which it is immersed.
(v. i.) To move progressively in water by means of strokes with the hands and feet, or the fins or the tail.
(v. i.) To be overflowed or drenched.
(v. i.) Fig.: To be as if borne or floating in a fluid.
(v. i.) To be filled with swimming animals.
(v. t.) To pass or move over or on by swimming; as, to swim a stream.
(v. t.) To cause or compel to swim; to make to float; as, to swim a horse across a river.
(v. t.) To immerse in water that the lighter parts may float; as, to swim wheat in order to select seed.
(n.) The act of swimming; a gliding motion, like that of one swimming.
(n.) The sound, or air bladder, of a fish.
(n.) A part of a stream much frequented by fish.
(v. i.) To be dizzy; to have an unsteady or reeling sensation; as, the head swims.
Example Sentences:
(1) Over the years the farm dams filled less frequently while the suburbs crept further into the countryside, their swimming pools oblivious to the great drying.
(2) Small and medium fish swim up when stressed, whereas larger fish swim down.
(3) All these animals have been taking the same daily swimming training, during 15 days before the injection of labelled molecules.
(4) When the organisms are free-swimming this is seen as the reversed locomotion of Jennings' "avoiding reaction."
(5) Low concentrations of cercaricides are toxic both for cercariae and parthenites from the liver of mollusks and for freely swimming cercariae.
(6) A comparison was made between the Q's estimated by the CO2 rebreathing method during tethered swimming and previously published data on Q determined by the dye-dilution method during free swimming in a flune.
(7) The maximal swimming time in the water (33--34 degrees C) with an additional load of 3 per cent of body weight failed to increase after 5 weeks of training in the animals to which dexamethasome was infected.
(8) The cardiac TG concentration was back to control levels by the 2nd h after the swim.
(9) Further the results of a test under practical conditions in a swimming pool are shown and the possibility to discriminate different types of waters by their chlorine demand under constant-titration.
(10) Addition of hydrocortisone, prednisolone and corticosterone into the medium as well as in vivo administration of these increased the adrenaline synthesis in swimming rats and did not alter it in intact rats.
(11) We confirmed that swimming activity is induced reversibly following exposure of the nerve cord to 5-HT (50 microM); the half-maximal rate of swimming activity develops in about 15 min.
(12) Thirty-eight female Wistar rats were randomly assigned to one of three groups: run-trained (RUN), swim-trained (SWIM) or control (CON).
(13) All motoneuron firing during fictive swimming is associated with a tonic depolarization that falls away slowly once firing stops, is increased by hyperpolarizing current, and is reduced by depolarizing current.
(14) The chemotactic receptor-transducer proteins of Escherichia coli are responsible for directing the swimming behavior of cells by signaling for either straight swimming or tumbling in response to chemostimuli.
(15) Eukaryotic ribosomes were isolated from the cryptobiotic embryos and from the further-developed free-swimming nauplii of the brine shrimp Artemia salina.
(16) The purpose of this study was to determine whether a chronic swimming program could reverse the decreased cardiac function and altered myosin biochemistry found in hearts of rats with established renal hypertension.
(17) The activity of hexobarbital oxidase in vivo was found to be higher in rats forced to swim regularly (sleeping time studies).
(18) An echocardiographic evaluation of 77 members of a championship childhood swim team showed dimensional variations from normal in most athletes.
(19) There are these two young fish swimming along, and they happen to meet an older fish swimming the other way, who nods at them and says, "Morning, boys, how's the water?"
(20) VO2 in both styles curvilinearly increased with swimming velocity, and these relationships were well fitted for the regression equation of the second order (Br: y = 3.84625x2 - 1.95914x + 1.310463,r2 = 0.999 (p < 0.05), Fr: y = 3.233446x2 - 2.28136x + 1.611524, r2 = 0.979 (p < 0.05)).