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free radical

英 [ˌfriː ˈrædɪkl]

美 [ˌfriː ˈrædɪkl]

n.  自由基; 游离基

医学化学

牛津词典

    noun

    • 自由基;游离基
      an atom or group of atoms that has an electron that is not part of a pair, causing it to take part easily in chemical reactions. Free radicals in the body are thought to be one of the causes of diseases such as cancer.

      柯林斯词典

      • 自由基;游离基
        Free radicalsare atoms that contain one or more unpaired electrons. Free radicals are believed to be a cause of ageing, heart disease, and some cancers.

        英英释义

        noun

        • an atom or group of atoms with at least one unpaired electron
          1. in the body free radicals are high-energy particles that ricochet wildly and damage cells
          Synonym:radical

        双语例句

        • We studied the effect of scavenging hydroxyl free radical by Se-polysaccharide and Se-protein under the best condition of Fenton system.
          结果表明:硒多糖和硒蛋白清除羟自由基的效果比与之相同浓度的无机硒和相同浓度的多糖及蛋白都要明显;
        • Secondary inflammatory reaction and free radical damage existed in the tissue around intracerebral hemorrhage.
          脑出血后血肿周围存在继发炎性反应与自由基损伤。
        • Copper-containing enzymes play important roles in iron and catecholamine metabolism, free radical scavenging, and in the synthesis of hemoglobin, elastin and collagen.
          含铜的酶在铁和儿茶酚胺的代谢、自由基清除、合成血红蛋白、弹性蛋白和胶原蛋白中发挥重要作用。
        • They also dramatically increase free radical generation in the brain.
          他们还大幅增加自由基的生成在大脑中。
        • They are large molecules that are able to maintain stability even if they are in a free radical form.
          抗氧化剂是很大的分子团,即使是在自由基的状态下它们仍能保持稳定。
        • Antioxidants are also called free radical scavengers.
          抗氧化剂也被称为自由基的清道夫。
        • Iron and copper increase oxidative stress ( free radical damage), which is a major problem in CFIDS.
          增加铁和铜的氧化应激(自由基损伤),这是一个重大问题在CFIDS。
        • Furthermore, the mechanism of free radical scavenging reactions of Magnolol and Honokiol were proposed.
          此外,初步探讨了其自由基清除活性反应机理。
        • Conclusion Formaldehyde can injury free radical eliminated system to cause lung injury.
          结论:甲醛可损伤小鼠自由基清除系统。
        • Study on the ability of scavenging free radical of the different extracts from leaves of Eucalyptus
          桉树叶不同提取物对自由基的清除能力研究