Example sentences of "[noun] [be] obtain from [noun pl] [prep] " in BNC.

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1 The tree-ring dates are obtained from samples of extremely long-lived trees , such as the bristlecone pine .
2 Supporting evidence was obtained from experiments in which the ability of a depolarizing stimulus to release radiolabelled glutamate was shown to be elevated in potentiated hippocampal tissue .
3 Biopsy specimens of normal colon were obtained from patients without any evidence of colonic neoplasia .
4 Most of the following information was obtained from replies to a letter from the Chairman to more than fifty correspondents in various parts of the world ( see Appendix 2.9 ) .
5 Colonoscopic biopsies were obtained from patients with active or inactive ulcerative colitis or Crohn 's disease , diagnosed by classical clinical , radiological , endoscopic , and histological criteria .
6 Definitive proof that the activity in question is related to TFIIA was obtained from experiments with recombinant yeast TFIIA expressed in E.coli .
7 Fewer than expected samples were obtained from patients with successful H pylori eradication as the eradication rate with triple treatment in the DU trial was low at an overall 50% .
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