(n.) A turn or lashing of spun yarn or small stuff, or a metallic clasp or fastening, uniting the point and shank of a hook to prevent its unhooking or straighening out.
(n.) A ratchet movement in a loom.
Example Sentences:
(1) The liver metastasis was produced by intrasplenic injection of the fluid containing of KATOIII in nude mouse and new cell line was established using the cells of metastatic site.
(2) BL6 mouse melanoma cells lack detectable H-2Kb and had low levels of expression of H-2Db Ag.
(3) Microionophoretically applied excitatory amino acids induced firing of extracellularly recorded single units in a tissue slice preparation of the mouse cochlear nucleus, and the similarly applied antagonist 2-amino-5-phosphonovalerate (2APV) was demonstrated to be a selective N-methyl-D-aspartate (NMDA) receptor antagonist.
(4) Serial sections of mouse foetal liver, during the 9th and 16th days of gestation, were studied.
(5) The promoters of the adenovirus 2 major late gene, the mouse beta-globin gene, the mouse immunoglobulin VH gene and the LTR of the human T-lymphotropic retrovirus type I were tested for their transcription activities in cell-free extracts of four cell lines; HeLa, CESS (Epstein-Barr virus-transformed human B cell line), MT-1 (HTLV-I-infected human T cell line without viral protein synthesis), and MT-2 (HTLV-I-infected human T cell line producing viral proteins).
(6) 10D1 mAb induced a substantial proliferation of peripheral blood T cells when cross-linked with goat anti-mouse Ig antibody.
(7) The effects of in vivo administration of native prostaglandin E2 (PGE) on the cycling status of the granulocyte-monocyte progenitor cell (CFU-GM) were examined in a mouse model.
(8) The increase in red blood cell mass was associated with an elevation in erythropoietic stimulatory activity in serum, pleural fluid, and tumor-cyst fluid as determined by the exhypoxic polycythemic mouse assay.
(9) Implantation of the mouse embryo involves the invasion of the secondary trophoblast giant cells of the ectoplacental cone (EPC) into the uterine decidua.
(10) It is concluded that in the mouse model the ability of buspirone to reduce the aversive response to a brightly illuminated area may reflect an anxiolytic action, that the dorsal raphe nucleus may be an important locus of action, and that the effects of buspirone may reflect an interaction at 5-hydroxytryptamine receptors.
(11) The expression of the mRNA for mouse testicular lactate dehydrogenase (LDH-X) was examined by RNA:cDNA hybridization in situ in the testis and by Northern analyses of meiotic and postmeiotic spermatogenic cell populations.
(12) These results provide evidence that trait selection can change gonadotrophin receptor concentration and the dynamics of hormone secretion during the oestrous cycle of the mouse.
(13) In the triploids, the 40 female chromosomes present (mouse, n = 20) were derived from a single diploid pronucleus formed after the extrusion of a first polar body, and following the monospermic fertilization of primary oocytes.
(14) These results do not support the view that in the rat pheromones from adult males enhance puberty in females, contrary to what is known to happen in the mouse.
(15) Stable factor-dependent B-cell hybridomas were used to monitor the purification of the growth factor from the supernatant of a clonotypically stimulated mouse helper T-cell clone.
(16) Human GH did not alter basal cyclic AMP levels in mouse osteoblasts.
(17) DNA from 9% (47 of 529) of the E. coli colonies tested hybridized with the ST probe, whereas only 5% (28 of 529) produced ST as measured by the suckling mouse bioassay.
(18) We previously established that the binding constant (Ka) of this receptor site for the chemically synthesized model AGE, 2-(2-furoyl)-4(5)-(2-furanyl)-1H- imidazole-butyric acid (FFI-BA), on cells of the mouse macrophagelike cell line RAW 264.7 is identical to that for AGE proteins.
(19) The nature, intracellular distribution, and role of proteins synthesized during meiotic maturation of mouse oocytes in vitro have been examined.
(20) The relative contributions of transcriptional and posttranscriptional regulation of gene expression to the increase in constitutively expressed cellular proteins were examined in mouse kidneys undergoing compensatory growth following unilateral nephrectomy (UNI-NX).
Ratchet
Definition:
(n.) A pawl, click, or detent, for holding or propelling a ratchet wheel, or ratch, etc.
(n.) A mechanism composed of a ratchet wheel, or ratch, and pawl. See Ratchet wheel, below, and 2d Ratch.
Example Sentences:
(1) But similar accusations have been levelled by Anders Fogh Rasmussen , the secretary general of Nato, and by pro-shale officials in Romania and Lithuania , as cold war-style tensions have ratcheted.
(2) President Obama is to meet today with members of the National Governors Association – a prime opportunity for the president to ratchet up the pressure on Republicans to make a deal.
(3) Muller's ratchet is an important concept in population genetics.
(4) The prolonged estrogen requirement during the lag period is not truly discontinuous as previously suggested but rather can be satisfied by discontinuous pulses of estrogen in a ratchet-like fashion because of the stability of their effects.
(5) "There has been a ratcheting down of deterrence gestures by the US, and that has helped cool the situation a little," said John Delury, a North Korea analyst at Yonsei University in Seoul.
(6) Muller's ratchet could have significant implications for variability of disease severity during virus outbreaks, since genetic bottlenecks must often occur during respiratory droplet transmissions and during spread of low-yield RNA viruses from one body site to another (as with human immunodeficiency virus).
(7) North Korea again ratcheted up the tension in its nuclear standoff with the world by declaring yesterday that it would "weaponise" all of its plutonium and threatening its opponents with military action.
(8) The effect of this ratcheting motion is to subtract from the DNA molecule's forward movement, at each step, an amount which is proportional to its length.
(9) This sets up a ratchet effect each year and means that pay almost never goes down.
(10) Croatia has bused hundreds of migrants to its border with Hungary, ratcheting up tensions in Europe’s refugee crisis as police fired tear gas to drive back several hundred people trying to enter Slovenia .
(11) Especially because Trump suggested that he never settled cases and derided others who did settle them.” The looming move to the White House ratcheted up pressure, Tobias said.
(12) Once these kick in in earnest, they will sweep many species out of their habitability zones, and ratchet up the extinction rate still further.
(13) Speaking soon afterwards, Tony Blair said it was time to "ratchet up the international and diplomatic pressure" on Iran and demonstrate Tehran's "total isolation" on the issue.
(14) It would drive precious talent abroad and would be used by those in other banks to ratchet up their own salaries.
(15) Their voices will act like a ratchet, driving up ambition on climate.
(16) The report warned that the five-year program of cuts imposed by the Abbott government started gently but would “ratchet sharply upwards” in coming years.
(17) Ratcheting up the pressure ahead of tomorrow's Summit in Brussels, Hollande also said he would fight German attempts to create a federalised eurozone.
(18) The tension ratcheted up when the team decamped to Paris before the show, especially when American Vogue editor Anna Wintour swung by to cast her eye over the work.
(19) The Israeli government is reportedly fearful that any guidelines agreed in Paris would be turned into another UN resolution before Trump’s inauguration, and it has ratcheted up its rhetoric, presenting itself as the victim of an international conspiracy.
(20) On Tuesday, president Bashar al-Assad ratcheted up his own language by describing the crisis as "a real war" and pledged to do everything necessary to prevail.