What's the difference between metamorphose and null?

Metamorphose


Definition:

  • (v. t.) To change into a different form; to transform; to transmute.
  • (n.) Same as Metamorphosis.

Example Sentences:

  • (1) A differential, temporal and spatial expression of this epitope in metamorphosing nervous tissue was outlined, that apparently characterises homologous neuronal populations in two phylogenetically distinct holometabolous insects, i.e.
  • (2) Arms excised from metamorphosing larvae will undergo a sequence of contraction and histolysis that is identical to that occurring in intact larvae.
  • (3) Six polypeptides are characteristic of the secondary intestinal epithelium, as they are only detected in the newly-metamorphosed juvenile.
  • (4) Silver grains on colloid droplets indicating thyroid hormone excretion are inexistent in the most larval neotenics, more numerous in most metamorphosed neotenics.
  • (5) In metamorphosing tadpole liver, the quantitative and qualitative changes in glycoproteins were observed by sodium dodecyl sulfate polyacrylamide gel electrophoresis and lectin-peroxidase method.
  • (6) When the narrative voice ventriloquises the metamorphosed Gregor to muse "Was he an animal if music could captivate him so?
  • (7) In this study, relative enzyme activities of the products of two duplicate loci in each of three enzyme systems (aconitase, malate dehydrogenase, and isocitrate dehydrogenase) were measured in paedomorphs and in paedomorphs forced to metamorphose by treatment with thyroxine.
  • (8) The background of the National Cancer Institute fermentation program is placed into the historical perspective of the entire NCI drug development program, which began as the Cancer Chemotherapy National Service Center and metamorphosed into the Chemotherapy Program and ultimately into the Division of Cancer Treatment.
  • (9) The sexual abuse of women today is analyzed alongside the mythology of Ovid's Metamorphoses.
  • (10) Inhibitors of cysteine proteinase were found in tadpole tail of metamorphosing bullfrog.
  • (11) These tadpoles metamorphosed as intact controls did, but their plasma PRL levels remained low.
  • (12) DNA synthesis was studied by 3H-thymidine incorporation in limb tissues of mesodermal origin in metamorphosing common frog (Rana temporaria) tadpoles in the process of loss of regenerative ability.
  • (13) We report an approach to this problem by observing metamorphosing larvae using electron microscopy and by assaying the aggregation potential of ciliated and central larval cells fractionated on Percoll gradients.
  • (14) Presence of a thyroxine-binding protein was demonstrated in vivo in cell sap of tail and liver of metamorphosing Rana catesbeiana tadpoles.
  • (15) These data indicate that vacuoles may be discharged promptly from the liver cell cytoplasm after recovery from congestion, and the remaining vacuoles may metamorphose to hyaline globules by condensation of the contents and finally fade into the cytoplasm.
  • (16) His experiences typically involve paralysis, difficulty breathing, strange proprioceptive hallucinations such as his body vibrating, and bizarre "hyper-real" visual hallucinations during which objects may metamorphose into nightmarish objects.
  • (17) Using this size difference to examine the hypothesis that neuron numbers are matched to the size of their postsynaptic targets during neuronal cell death, we measured the following on stage 66 frogs metamorphosing from PTU-treated and untreated tadpoles: lumbar lateral motor column (L-LMC) motoneuron number and mean nuclear cross-sectional area; thoracic and lumbar dorsal root ganglion (DRG) cell number and mean nuclear cross-sectional area; and muscle fiber number in two representative thigh muscles.
  • (18) The metamorphosed implants were analyzed microscopically for the presence of musculature, histochemically for the distribution of enzyme activity, and electrophoretically for determination of the phenotypes of the two muscle-marker enzymes.
  • (19) Tadpoles of Xenopus laevis reared in water containing 0-01% propylthiouracil continue to grow but fail to develop or metamorphose.
  • (20) At the developmental stage at which the hemolymph of the unparasitized metamorphosing host has its maximum titer of prepupal ecdysteroids, the hemolymph of 4th instar "truly parasitized" hosts (hosts with a surviving endoparasite) had a strongly reduced ecdysteroid titer.

Null


Definition:

  • (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.