(n.) One who keeps account of a game played, as of billiards.
(n.) A counter used in card playing and other games.
(n.) The soldier who forms the pilot of a wheeling column, or marks the direction of an alignment.
(n.) An attachment to a sewing machine for marking a line on the fabric by creasing it.
Example Sentences:
(1) These variants may serve as useful gene markers in alcohol research involving animal model studies with inbred strains in mice.
(2) Activity of Na,K-ATPase activity was measured as a functional marker for synaptosomal membranes.
(3) Anti-Leu 7 could not be considered as a specific marker for oligodendroglioma.
(4) Serum samples from 23 families, including a total of 48 affected children, were tested for a set of "classical markers."
(5) On removal of selective pressure, the His+ phenotype was lost more readily than the Ura+ Trp+ markers, with a corresponding decrease in plasmid copy number.
(6) In spite of dense lymphocytic infiltration only 3% of the tumor infiltrating lymphocytes exhibit the activation marker CD 25.
(7) Twelve families with Wiskott-Aldrich syndrome (WAS) were studied by linkage analysis using 10 polymorphic marker loci from the X-chromosome pericentromeric region.
(8) These results indicate that HBV markers in cord blood are either false-positive or due to contamination by maternal blood rather than an indication of in utero infection.
(9) From the biochemical markers in follicular fluid, cyclic adenosine monophosphate has a distinct predictive value in regard to pregnancy in in vitro fertilization-embryo transfer cycles.
(10) We therefore enumerated the percentage of Leu2a+ cells as well as the occurrence of HLA-DR activation markers within this population.
(11) 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.
(12) Thus, our results indicate that calbindin-D28k is a useful marker for the projection system from the matrix compartment and that its expression is modified in patients with progressive supranuclear palsy and striatal degeneration.
(13) The telencephalon of teleost fish shows high affinity uptake for D-[3H]aspartate, intermediate levels of GABAergic markers and low levels of cholinergic enzymes.
(14) The presence of these markers has facilitated the identification and characterization of the mononuclear cells in a number of animal and human lymphoid malignancies.
(15) The independent but combined use of both antigens, appreciably raises the diagnostic success percentage with regard to that obtained when only one tumour marker was used.
(16) Maternal plasma levels of cortiocotrophin-releasing factor (CRF) have been measured in abnormal pregnancy states to assess their potential as biochemical markers for at-risk pregnancies.
(17) Improvement of its particularly poor prognosis requires therefore early screening based on reliable biological markers.
(18) The summary statistics examined are (a) the slope of the least-squares regression of the marker, (b) the average of the last r measurements, and (c) the difference between the averages of the last r and the first s measurements.
(19) A 6.4 kilobase C4B-5'-specific Taq I fragment usually provided a reliable guide to the presence of a C4A deletion but unusually in one instance this fragment was found to be a marker of a functioning C4A gene.
(20) The availability of locus-specific probes should significantly expand the role of minisatellite markers in population biology.
Tester
Definition:
(n.) A headpiece; a helmet.
(n.) A flat canopy, as over a pulpit or tomb.
(n.) A canopy over a bed, supported by the bedposts.
(n.) An old French silver coin, originally of the value of about eighteen pence, subsequently reduced to ninepence, and later to sixpence, sterling. Hence, in modern English slang, a sixpence; -- often contracted to tizzy. Called also teston.
Example Sentences:
(1) As compared with solvent-treated control, no significant increases were observed in the number of revertant colonies in all tester strains in both systems with and without mammalian metabolic activation (S9 Mix).
(2) Gamma-ray-induced reversions in the Ames Salmonella tester strain TA2638 have been studied for their dependence on a number of experimental parameters.
(3) In addition to the fatigue tester and the pulse duplicator, a signal conditioner, a DC amplifier, an analog-to-digital converter, and a digital microcomputer comprised the essential hardware.
(4) Exogenous IC-DH in the incubation for LMA did not alter the mitotic crossing-over and the mitotic gene conversion of dimethylnitrosamine (DMNA) and AR2MNFN (a nitroimidazo[2,1-b]thiazole) in the tester D7 strain of Saccharomyces cerevisiae.
(5) These results suggest that nickel is unable to induce basepair or frameshift mutations in Salmonella tester strains and are discussed in relationship to the low binding affinity of Ni(II) for DNA.
(6) In Drosophila melanogaster new tester strains for the somatic mutation and recombination test (SMART) in the wing were constructed with the aim of increasing the metabolic capacity to activate promutagens.
(7) Vibratory sensitivity was strongly related to height when measurements were made with either the vibration sensitivity tester (P = .02) or the biothesiometer (P less than .01); however, there was no relation between thermal sensitivity (as measured with the thermal sensitivity tester) and height.
(8) Trials with Escherichia coli ATCC and Staphylococcus aureus ATCC strains have been carried out using a point-acting tester as generator of negative oxygen ions.
(9) In addition, the depression of prophage induction observed when the drugs were combined with aflatoxin B1 may be indicative of a common target site of action in the tester strains.
(10) The newly engineered acetyltransferase-enhanced Salmonella tester strain YG1024 (TA98(pYG219] demonstrated greatly enhanced sensitivity to the mutagenicity of 2,4-DAT.
(11) A study was conducted to evaluate the potential of the Testark system in comparison with a commercially available pulp tester.
(12) The stiffness tester and torque meter were found to yield nearly the same measurements of bending deformation for orthodontic wires as small as .007 inch diameter, provided the different bending apparatus are calibrated to each other.
(13) Results establish a revised expression for Young's modulus and show that either the stiffness tester or the torque meter will yield essentially the same measured values of bending properties.
(14) These findings indicate the necessity for using the same tester when effects of treatment are evaluated.
(15) To aid linkage analysis and mapping studies in Dictyostelium discoideum, we have constructed several tester strains with easily scored mutations characterizing the six currently identified linkage groups.
(16) Chromotest agar dishes yielded optimal results after 16-18 h incubation, presumably because of the agar growth characteristics of tester strain PQ37.
(17) The two strains were crossed individually to normal sequence tester strains and the sizes of the proximal and distal segments were followed by pulsed-field gel electrophoresis.
(18) Despite the strong, positive mutagenic response of fecanpentaenes using Ames tester strains TA 98 and TA 100, no increase in nuclear aberrations, taken as a measure of genotoxicity in colonic epithelial cells, was observed over control levels.
(19) The deficience can be restored, giving respiratory sufficience, in crosses with rho0 testers.
(20) The mutants have also been crossed to mit- testers with defined genetic lesions.