What's the difference between onto and upon?

Onto


Definition:

  • (prep.) On the top of; upon; on. See On to, under On, prep.

Example Sentences:

  • (1) We have measured the antibody specificities to the two polysaccharides in sera from asymptomatic group C meningococcal carriers and vaccinated adults by a new enzyme-linked immunosorbent assay (ELISA) procedure using methylated human serum albumin for coating the group C polysaccharide onto microtiter plates.
  • (2) The polymerization of dATP, dCTP, and dGTP onto the defined length initiator, d(pA)10, has been carried out in four buffers.
  • (3) Ultrastructual analysis indicated that the majority of the microtubules assembled predominantly from the pericentriolar material but also onto the centrioles.
  • (4) Since only a few of these medium sized terminals in any one cluster degenerate after tectal lesions, and none degenerate after cortical lesions, it is suggested that the morphological arrangement of these clusters may permit the convergence of axons from several sources, some of which are unidentified, onto the same dendritic segment.
  • (5) The new technique, Surface Immune Precipitation (SIP), entails the application of an antigen sample droplet directly onto the surface of a gel containing antibody, the gel being supported by a reflecting substrate.
  • (6) Alveolar macrophages (greater than 97% esterase positive) were isolated form bronchoalveolar lavage fluids by adherence onto plastic.
  • (7) By using various colors, it is possible to tattoo a nipple-areola complex onto the breast that will have an illusion of projection.
  • (8) The average repetitive yields and initial coupling of proteins spotted or blotted into PVDF membranes ranged between 84-98% and 30-108% respectively, and were comparable with the yields measured for proteins spotted onto Polybrene-coated glass fiber discs.
  • (9) Ten patients have undergone abdominal proctocolectomy with the formation of an ileal reservoir anastomosed onto the anal canal using a stapling device.
  • (10) Following its success, Littleloud created a version of the game for Apple's iPad, launched onto the App Store at Christmas.
  • (11) Strains of C. albicans differing in their abilities to secrete proteinase in vitro and to produce germ tube were inoculated onto the skin surface of newborn mice, and the invasion of the yeast cells into the horny layer was examined by histological techniques.
  • (12) Adriamycin (ADM) was absorbed onto fine particles of activated charcoal.
  • (13) In the adsorption studies, it was apparent that the originally secreted amelogenin (25 K), proline, and histidine-rich protein (2a), as well as the higher molecular weight components (60-90 K), showed a strong adsorption affinity onto the HA.
  • (14) These results indicate that, following a single painting of DNFB onto Langerhans cell-deficient skin, the numbers of Lyt2+ cells do not change significantly, but do change functionally.
  • (15) A novel type of ion exchanger was prepared by multipoint covalent binding of polystyrene chains onto the surface of porous silica followed by polymer-analogous modification of the bonded layer.
  • (16) In 25 rabbits, endometrium from the right uterine horn was transplanted onto the peritoneum (Experimental group = Group E).
  • (17) Human melanocyte cultures were established using disaggregated epidermal cell suspensions derived from foreskins and plated onto culture dishes in medium containing 2% fetal bovine serum, growth factors, hormones, and melanocyte growth factor (MGF) extracted from bovine hypothalamus (Wilkins et al., J.Cell.
  • (18) To assess the window of implantation, same age embryos were transferred onto endometrium of different maturational stages.
  • (19) Since catalase is not normally released by cells, a likely explanation for its presence in high concentrations in normal ELF is that it is released by lung inflammatory and parenchymal cells onto the epithelial surface of the lower respiratory tract during their normal turnover and collects there due to the slow turnover of ELF.
  • (20) The attachment of D-amino acids or N-methyl amino acids onto the dopamine molecule caused a marked decrease in cardiovascular activity by intravenous injection, while the introduction of lipophilic amino acids caused a marked increase in myocardial contractility and blood pressure in anesthetized dogs.

Upon


Definition:

  • (prep.) On; -- used in all the senses of that word, with which it is interchangeable.

Example Sentences:

  • (1) Synthesis of choline esterase on the medium with acetylcholine at a concentration of 1% was increased more than twofold upon addition of glucose at a concentration of 0.1%.
  • (2) Cellulase regulation appears to depend upon a complex relationship involving catabolite repression, inhibition, and induction.
  • (3) These results show that the pathogenic phenotypes of MCF viruses are dissociable from the thymotropic phenotype and depend, at least in part, upon the enhancer sequences.
  • (4) We have investigated the increase in the spcDNA population upon cycloheximide treatment of individual sequences, which are found to amplify differentially.
  • (5) They had allegedly agreed that Younous would not be charged with any crime upon his arrival there and that he would not be detained in Morocco for longer than 72 hours.
  • (6) Induction of labor, based upon only (1) a finding of meconium in the amniocentesis group or (2) a positive test in the OCT group, was nearly three times more frequent in the amniocentesis group.
  • (7) The effects of glucagon-induced insulin secretion upon this lipid regulation are discussed that may resolve conflicting reports in the literature are resolved.
  • (8) The presently available data allow us to draw the following conclusions: 1) G proteins play a mediatory role in the transmission of the signal(s) generated upon receptor occupancy that leads to the observed cytoskeletal changes.
  • (9) We have evaluated the life-span of B lymphocytes by measuring the functional reactivity of normal B cells upon transfer into xid mice, which do not respond to anti-mu, fluoresceinated-Ficoll (FL-Ficoll) and 2,4,6-trinitrophenyl aminoethylcarbamylmethyl Ficoll (TNP-Ficoll).
  • (10) The third route was quantitated by its sensitivity to probenecid and its activity was increased in saline buffers and upon addition of glucose and was inhibited by oligomycin.
  • (11) This experimental system allows separation of three B lymphocyte developmental stages: early differentiation in vitro, progression to IgM secretion in vivo, and late differentiation dependent upon mature T lymphocytes in vivo.
  • (12) Data is available to support the early influences of enamel organ epithelium upon a responding mesenchyme in the determination of dental morphogenetic fields (Dryburg, 1967; Miller, 1969).
  • (13) Batson believes there is a “mood” that needs to be seized upon.
  • (14) Hypnosis might be looked upon as a method by which an unscrupulous person could sustain such a state of powerlessness in a victim.
  • (15) Based upon our clinical experience and this review of the literature, a suggested management protocol is presented.
  • (16) Group teaching compared to individualized teaching of the patients to collect their own aliquots did not appear to have a measurable effect upon the levels of bacteriuria.
  • (17) It appears that the effects of monocular lid suture upon MIN are in most respects similar to the effects of monocular lid suture previously reported for the A laminae.
  • (18) Following mass disasters and individual deaths, dentists with special training and experience in forensic odontology are frequently called upon to assist in the identification of badly mutilated or decomposed bodies.
  • (19) Accumulating evidence indicates that for most tumors, the switch to the angiogenic phenotype depends upon the outcome of a balance between angiogenic stimulators and angiogenic inhibitors, both of which may be produced by tumor cells and perhaps by certain host cells.
  • (20) Based upon the analysis of 1015 case records of patients, aged 16-70, with different hip joint pathology types, carried out during 1985-1990, there were revealed mistakes and complications after reconstructive-restorative operations.

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