What's the difference between derived and known?

Derived


Definition:

  • (imp. & p. p.) of Derive

Example Sentences:

  • (1) The interaction of the antibody with both the bacterial and the tissue derived polysialic acids suggests that the conformational epitope critical for the interaction is formed by both classes of compounds.
  • (2) The vascular endothelium is capable of regulating tissue perfusion by the release of endothelium-derived relaxing factor to modulate vasomotor tone of the resistance vasculature.
  • (3) Leumorphin is a 29-amino-acid peptide derived from preproenkephalin B. Intracerebroventricular (i.c.v.)
  • (4) A full-length cDNA encoding porcine heart aconitase was derived from lambda gt10 recombinant clones and by amplification of the 5' end of the mRNA.
  • (5) In animal experiments pharmacological properties of the low molecular weight heparin derivative CY 216 were determined.
  • (6) In addition to their involvement in thrombosis, activated platelets release growth factors, most notably a platelet-derived growth factor (PDGF) which may be the principal mediator of smooth muscle cell migration from the media into the intima and of smooth muscle cell proliferation in the intima as well as of vasoconstriction.
  • (7) Release of 51Cr was apparently a function of immune thymus-derived lymphocytes (T cells) because it was abrogated by prior incubation of spleen cells with anti-thymus antiserum and complement but was undiminished by passage of spleen cells through nylon-wool columns.
  • (8) PMNs could be primed for PMA-triggered oxidative burst by muramyl peptide molecules (MDP) and two of its adjuvant active nonpyrogenic derivatives.
  • (9) Recent studies have shown that an aberration in platelet-derived growth factor gene expression is unlikely to be a factor in proliferation of smooth-muscle cells.
  • (10) The macrophage-derived product, interleukin 1 (IL 1) is thought to play an important regulatory role in the proliferation of T lymphocytes; however, its mechanism of action is unknown.
  • (11) In the upper limb and facial forms of familial amyloidotic polyneuropathy first recorded in Swiss and Finns respectively, the differences in their patterns of neurological disease and ocular lesions could be the result of their amyloids deriving from proteins other than prealbumin.
  • (12) The antiproliferative activity of IFN was studied using the parental L cell line, a tk- derivative, and a tk- (tk+) subline into which the tk gene of herpes simplex virus was introduced.
  • (13) Bipolar derivations with the maximum PSE always included the locations with the maximum PSE obtained from a linked ears reference.
  • (14) Only those derivatives with a free amino group and net positive charge in the side chain were effective.
  • (15) Northern blot analysis with an 18-mer radiolabelled oligonucleotide, derived from an ALP specific cDNA clone, revealed a specific mRNA of about 700-800 nucleotides in HS-24 tumor cells.
  • (16) The mortality data were derived from the reports by Miyagi Prefectural Government.
  • (17) Ferrocene derivatives, in general, show a degree of versatility, coupling the electron-transfer reactions of many enzymes.
  • (18) The ADAM derivative of carnitine was separated from decomposition products of the reagent and related compounds such as amino acid derivatives on a silica gel column eluted with methanol-5% aqueous SDS-phosphoric acid (990:10:1).
  • (19) This doxorubicin derivative did not bind to Sepharose which was conjugated with cardiac actin.
  • (20) 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.

Known


Definition:

  • (p. p.) of Know
  • (p. p.) of Know.

Example Sentences:

  • (1) National policy on the longer-term future of the services will not be known until the government publishes a national music plan later this term.
  • (2) Until his return to Brazil in 1985, Niemeyer worked in Israel, France and north Africa, designing among other buildings the University of Haifa on Mount Carmel; the campus of Constantine University in Algeria (now known as Mentouri University); the offices of the French Communist party and their newspaper l'Humanité in Paris; and the ministry of external relations and the cathedral in Brasilia.
  • (3) Low birth weight, short stature, and mental retardation were common features in the four known patients with r(8).
  • (4) Ethanol and L-ethionine induce acute steatosis without necrosis, whereas azaserine, carbon tetrachloride, and D-galactosamine are known to produce steatosis with varying degrees of hepatic necrosis.
  • (5) Although measurements are easily obtained with a tape measure, the validity of these measurements is not known.
  • (6) From these data it is possible to predict theoretically the apparent temperature difference as seen by an infrared scanner or radiometer with a detector of which the spectral detectivity, D (lambda), is known.
  • (7) They broke in with a battering ram: an armoured vehicle known as a Bearcat.
  • (8) Infection with opportunistic organisms, either singly or in combination, is known to occur in immunocompromised patients.
  • (9) Finally the advanced automation of the equipment allowed weekly the evaluation of catecholamines and the whole range of their known metabolites in 36 urine samples.
  • (10) PBOP was as effective as polymyxin B nonapeptide (PMBN), the known very potent permeabilizer.
  • (11) Angle closure glaucoma is a well-known complication of scleral buckling and it is of particular interest when it occurs in eyes with previously normal angles.
  • (12) It is a place that occupies two thirds of our planet but very little is known of vast swaths of it.
  • (13) It has 61% homology with tRNA(Leu)(anticodon m5CAA) and 63% homology with tRNA(Leu)(anticodon UAG), the two other known yeast tRNAs(Leu).
  • (14) The mtRF-1 could translate all of the known termination codons in the rat mitochondrial genome.
  • (15) Groups of inbred female mice of strains CBA or C3H were infected genitally with a pathogenic human strain of Chlamydia trachomatis (N.I.1, serovar F) known to produce salpingitis and infertility in mice.
  • (16) To become president of Afghanistan , Ashraf Ghani Ahmadzai changed his wardrobe and modified his name, gave up coffee, embraced a man he once denounced as a “known killer” and even toyed with anger management classes to tame a notorious temper.
  • (17) The method used in connection with the well known autoplastic reimplantation not only presents an alternative to the traditional apicoectomy but also provides additional stabilization of the tooth by lengthing the root with cocotostabile and biocompatible A1203 ceramic.
  • (18) 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.
  • (19) The only localized tumors known to produce elevation of CEA above the levels observed in non malignant diseases are carcinomas of the large bowel and the pancreas.
  • (20) This condition may be caused by the prolonged, repetitive elevations of gonadal steroids and other hormones known to suppress gonadotropin-releasing hormone secretion that are elicited by their daily exercise.