单词	telomere
释义	telomere noun telo·​mere ˈte-lə-ˌmir  ˈtē-  : the natural end of a eukaryotic chromosome composed of a usually repetitive DNA sequence and serving to stabilize the chromosome Example Sentences Recent Examples on the Web Each time a cell divides to drive growth and repair, its telomeres shorten. Simon Makin, Scientific American, 1 Apr. 2020 But extremely short and extremely long telomeres are seen as a predictor of cancer risk. David Grossman, Popular Mechanics, 11 Apr. 2019 Telocyte’s gene therapy would aim to rebuild those glial telomeres. Katherine Ellen Foley, Quartz, 14 Jan. 2020 A year in space caused DNA damage; gene expression changes; a thickening of the retina; thickening of Kelly's carotid artery; shifts in gut microbes; reduced cognitive abilities; and a structural change at the ends of chromosomes called telomeres. Ashley Strickland, CNN, 20 Dec. 2019 The first deviation was the length of telomeres on Scott's DNA grew shorter than expected and his gene expression also changed. John Wenz, Popular Mechanics, 23 Oct. 2019 With every cell division, these protective telomeres grew shorter, hastening the plants’ inevitable genetic meltdown. Quanta Magazine, 5 Aug. 2019 As cells age, their telomeres shorten, and chromosomes in turn stop the cell from dividing further, Chen says. Ryan W. Miller, USA TODAY, 20 Nov. 2019 In a nutshell, telomeres are caps found at the ends of chromosomes that protect DNA. Cynthia Sass, Mph, Health.com, 1 Oct. 2019 See More Word History Etymology International Scientific Vocabulary First Known Use 1940, in the meaning defined above Medical Definition telomere noun telo·​mere ˈtel-ə-ˌmi(ə)r  ˈtēl-  : the natural end of a eukaryotic chromosome composed of a usually repetitive DNA sequence and serving to stabilize the chromosome
随便看	hits back hits it big hits it off hits on or upon hits out at hits the bottle hits the ceiling hits the hay hits the road hits the roof hits up hits upon hittable hitter hitters Hitti hitting hitting (on or upon) hitting (up) hitting (upon) hitting back hitting it big hitting it off hitting on or upon hitting out at

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