(a.) Of no legal or binding force or validity; of no efficacy; invalid; void; nugatory; useless.
(n.) Something that has no force or meaning.
(n.) That which has no value; a cipher; zero.
(v. t.) To annul.
(n.) One of the beads in nulled work.
Example Sentences:
(1) Measurements of acetylcholine-induced single-channel conductance and null potentials at the amphibian motor end-plate in solutions containing Na, K, Li and Cs ions (Gage & Van Helden, 1979; J. Physiol.
(2) DR(+) cells, however, showed no change in percentage and a lesser drop in absolute numbers, suggesting an increase with advancing disease of DR(+), Ig(-) null cells, which may represent immature B cell precursors.
(3) In this report we describe an improvement upon the design by Stanton and Lightfoot for a simple photographic null method to determine the kVp of a diagnostic region x-ray source.
(4) At least two (Rh null and the McLeod type) are responsible for congenital hemolytic disorders.
(5) (2) Sequences of brightness steps of like polarity (either increments or decrements) elicit positive and negative motion-dependent response components when mimicking motion in the cell's preferred and null direction, respectively.
(6) The analysis also involved statistical tests of a modified null hypothesis, the generation of confidence intervals (CIs) and a meta-analysis.
(7) The null potential of both responses became more and less negative with a decrease and an increase, respectively, in the extracellular potassium concentration.
(8) The null mutation of algR was generated in a mucoid derivative of the standard genetic strain PAO responsive to different environmental factors.
(9) Endoneurial fluid pressure (EFP) was recorded by an active, servo-null pressure system after a glass micropipette was inserted into rat sciatic nerve undergoing wallerian degeneration.
(10) In thymo-deprived mice (nude mice and B mice) the percentage of null cells increases during the stage of regeneration, and B mice develop a large number of Ig +-bearing cells.
(11) Alkaline phosphatase activity was elevated in the lymphocytes from T-CLL, cord blood and tonsils and the blast cells from Null-ALL.
(12) Analysis of ldlA cells has identified three classes of mutant alleles at the ldlA locus: null alleles, alleles that code for normally processed receptors that cannot bind LDL, and alleles that code for abnormally processed receptors.
(13) Putative null sup-38 mutations cause maternal-effect lethality which is rescued by a wild-type copy of the locus in the zygote.
(14) Null cells of patients with hypoplastic anemia did not produce erythroid colonies under any culture conditions.
(15) Comparison of simulated versus actual inheritance data demonstrates that the so-called null structural alleles actually produce functional globins.--The genetic controls in Peromyscus may be analogous to those in primates.
(16) A null zone and associated sudden phase-reversal of RSA were observed in stratum lucidum of CA3.
(17) When the stimulus is placed at a position approximately 80 degrees dorsal to the eye axis, there is no response; this area is called the null region.
(18) Northern blot analysis showed that Adh-1 mRNA was synthesized at wild-type levels in immature seeds of the null mutant, but dropped to 25% in mature seeds.
(19) Two tumours were null cell adenomas with PIs less than 0.1 and 0.2%.
(20) Thus this methodology offers the potential to study naturally occurring ADH electromorphs and null alleles independent of enzymatic activity assays.
Slime
Definition:
(n.) Soft, moist earth or clay, having an adhesive quality; viscous mud.
(n.) Any mucilaginous substance; any substance of a dirty nature, that is moist, soft, and adhesive.
(n.) Bitumen.
(n.) Mud containing metallic ore, obtained in the preparatory dressing.
(n.) A mucuslike substance which exudes from the bodies of certain animals.
(v. t.) To smear with slime.
Example Sentences:
(1) In a clear water reservoir built in ready construction after a working-period of five months quite a lot of slime could be found on the expansion joint filled with tightening compound on the base of Thiokol.
(2) We therefore used two different tRNA genes from the cellular slime mould Dictyostelium discoideum which are efficiently transcribed and processed in vivo in yeast.
(3) Furthermore, there were differences between anterior and posterior regions of both slime sheaths and stalk tubes.
(4) Passive protection towards a heterologous strain, even one with an antigenically similar slime layer, was dependent on the dose of the challenging injection.
(5) Electron microscopic evidence demonstrated that dimethyl sulfoxide (DMSO) induces formation of giant intranuclear microfilament bundles in the interphase nucleus of a cellular slime mold, Dictyostelium.
(6) Several lines of experimental evidence suggest that an anterior-posterior gradient of cyclic AMP exists in migrating pseudoplasmodia of the cellular slime mold Dictyostelium discoideum, and that this gradient may be responsible for control of the proportions of stalk and spore cells that form during culmination.
(7) An isotope dilution technique has been used to analyze the synthesis of metabolically stable nucleic acids during the mitotic cycle in surface plasmodia of the slime mould Physarum polycephalum.
(8) The nucleoproteins resulting from digestion of the nuclei of the true slime mold Pysarum polycephalum with micrococcal nuclease have been resolved according to the size classes in linear sucrose gradients containg 0.5 M NaCl, and analysed for DNA, RNA and protein content.
(9) Some responses of the cellular slime mold Dictyostelium discoideum to ultraviolet light (UV) irradiation were investigated by analyzing two aspects of deoxyribonucleic acid (DNA) excision repair in the vegetative cells: (i) the fate of thymine-containing dimers and (ii) the production and rejoining of single-strand breaks.
(10) A modified ruthenium red staining procedure was used to examine the fine structure of capsule and slime.
(11) Slime production by coagulase-negative staphylococci did not relate to the density of organisms recovered from the catheters or influence the presence of gram-negative bacteria.
(12) Some of the strains studied showed a greater potential to synthesize excess slime layer material than others.
(13) The intranuclear actin bundles appear at any developmental stage in two different species of cellular slime molds after treatment with DMSO.
(14) We predict that the Y.Smal protein in the restriction-modification enzyme gene locus of the enterobacterium serratia marcescens is a regulator of endonuclease expression; and, that the vegetative specific gene VSH7 of the slime mold dictyostelium discoideum codes for a regulator of gene expression specific for the slime mold growth phase before the onset of the developmental program.
(15) RNA Polymerase III transcription factors from the cellular slime mold Dictyostelium discoideum were characterized, based on their stable binding to isolated tRNA genes.
(16) The ecmA (pDd63) and ecmB (pDd56) genes encode extracellular matrix proteins of the slime sheath and stalk tube of Dictyostelium discoideum.
(17) Thirty carrier and 29 invasive Staphylococcus epidermidis isolates were analysed for production of slime, extracellular enzymes and antibiotic resistance.
(18) The chemical analysis of lipopolysaccharide and the minimal concentration for mitogenic response eliminated the possibility that the activity of slime products may be due to the contamination of lipopolysaccharide.
(19) A soluble cytochrome was isolated and purified from the slime mould Physarum polycephalum and identified as cytochrome c by room-temperature and low-temperature (77 degrees K) difference spectroscopy.
(20) Glycoproteins synthesized by the cellular slime mold Dictyostelium discoideum have been shown to contain asparagine-linked high-mannose oligosaccharides which have an N-acetylglucosamine group in a novel intersecting position (attached beta 1-4 to the mannose linked alpha 1-6 to the core mannose).