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相关概念视频

Amines to Sulfonamides: The Hinsberg Test01:23

Amines to Sulfonamides: The Hinsberg Test

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The Hinsberg test is a method to identify primary, secondary and tertiary amines, named after its pioneer, Oscar Hinsberg. Here, amines are treated with benzenesulfonyl chloride, also known as the Hinsberg reagent, in the presence of an excess of aqueous base, followed by acidification. Based on the nature of the amines, different changes are observed.
Generally, a primary amine reacts with the Hinsberg reagent to produce an N-substituted benzenesulfonamide. The electron-withdrawing sulfonyl...
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In-vitro Mutagenesis01:16

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To learn more about the function of a gene, researchers can observe what happens when the gene is inactivated or “knocked out,” by creating genetically engineered knockout animals. Knockout mice have been particularly useful as models for human diseases such as cancer, Parkinson’s disease, and diabetes.
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相关实验视频

Updated: Jan 10, 2026

Measuring Microbial Mutation Rates with the Fluctuation Assay
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细菌逆变异试验:艾姆斯试验

Divyansh Sharma1, Sakshi Mishra1, Gaurav Jha1,2

  • 1Genotoxicity Laboratory, Division of Toxicology and Experimental Medicine, CSIR-Central Drug Research Institute, Lucknow, Uttar Pradesh, India.

Methods in molecular biology (Clifton, N.J.)
|November 22, 2025
PubMed
概括
此摘要是机器生成的。

艾姆斯试验是一种成本效益高的细菌基因突变试验,用于评估化学变异性. 它可以检测细菌菌株的反向突变,帮助评估各种物质的安全性.

关键词:
在这里,我找到了它.致变性 致变性 致变性经合组织经合组织的经合组织组织的经合组织组织的经合组织的经合组织的经合组织的经合组织的经合组织.板块结合测试试验 板块结合测试化前测定试验在S9中,分数是S9的分数.

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科学领域:

  • 毒理学 毒理学 毒理学
  • 遗传学 遗传学 是一个
  • 微生物学 微生物学

背景情况:

  • 突变,包括基因突变,可以发生在各种细胞类型.
  • 评估化学物质的突变性潜力对于安全至关重要.
  • 艾姆斯试验是一种广泛使用,可靠和负担得起的毒理学试验.

研究的目的:

  • 描述艾姆斯试验作为评估化学变异性的一种方法.
  • 解释艾姆斯测试的机制和变化.
  • 突出其在遗传毒理学和监管评估中的重要性.

主要方法:

  • 使用改性沙门氏菌Typhimurium或埃舍里希亚大肠杆菌菌株,依赖氨基酸.
  • 检测反向突变,恢复氨基酸合成.
  • 采用两种主要方法:板块合并试验和预化试验,通常使用S9代谢激活.

主要成果:

  • 艾姆斯试验通过评估复原殖民地的发展来确定突变性潜力.
  • 它可以检测不同的突变类型,如移和基对替代.
  • 通过像OECD和ICH这样的组织存在标准化协议.

结论:

  • 艾姆斯试验是遗传毒理学的基本工具.
  • 它提供了一种可靠的查方法,用于工业化学品,药品和环境剂的致变性.
  • 它的稳定性和成本效益确保其在安全评估中继续使用.