相关实验视频

Updated: Feb 5, 2026

Studying Chronic Exposure of Mice to Ultraviolet B Radiation
03:20

Studying Chronic Exposure of Mice to Ultraviolet B Radiation

Published on: August 19, 2025

2.0K

生物效应和潜在的遗传/表观遗传适应性反应,慢性自然背景辐射

Monika Rajput1, Manoj Pandey1

  • 1DHR-ICMR Advanced Molecular Oncology Diagnostic Services (DIAMOnDS), Institute of Medical Sciences, Banaras Hindu University, Varanasi 221005, India; Department of Surgical Oncology, Institute of Medical Sciences, Banaras Hindu University, Varanasi 221005, India.

Mutation research. Reviews in mutation research
|February 3, 2026
PubMed
概括

在高背景辐射区域 (HBRAs) 的研究表明没有增加癌症风险,挑战了线性无值 (LNT) 模型. 有证据表明,在长期暴露的人群中,增强了DNA修复.

关键词:
适应性反应是一种适应性反应.背景辐射 背景辐射旁观者效应是一种旁观者效应.表观遗传修饰是一种表观遗传修饰.霍尔梅西斯 (Hormesis) 是一个低剂量辐射辐射的低剂量辐射.

更多相关视频

Quantification of γH2AX Foci in Response to Ionising Radiation06:53

Quantification of γH2AX Foci in Response to Ionising Radiation

Published on: April 6, 2010

21.0K
Studying Normal Tissue Radiation Effects using Extracellular Matrix Hydrogels11:01

Studying Normal Tissue Radiation Effects using Extracellular Matrix Hydrogels

Published on: July 24, 2019

6.3K

相关概念视频

Biological Effects of Radiation02:59

Biological Effects of Radiation

All radioactive nuclides emit high-energy particles or electromagnetic waves. When this radiation encounters living cells, it can cause heating, break chemical bonds, or ionize molecules. The most serious biological damage results when these radioactive emissions fragment or ionize molecules. For example, α and β particles emitted from nuclear decay reactions possess much higher energies than ordinary chemical bond energies. When these particles strike and penetrate matter, they...
18.0K
Epigenetic Regulation01:46

Epigenetic Regulation

Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
33.8K
Natural Selection and Adaptation01:15

Natural Selection and Adaptation

Natural selection, a fundamental concept in evolutionary biology, is the mechanism by which evolution is driven, favoring organisms that are best adapted to their environments. This process enhances their chances of survival and reproduction. Adaptation, a key outcome of this process, involves genetic modifications that optimize an organism's functionality under specific environmental challenges, such as extreme cold or thinner air at high altitudes.
Beyond physical adaptations,...
1.4K
Dual Nature of Electromagnetic (EM) Radiation01:10

Dual Nature of Electromagnetic (EM) Radiation

Electromagnetic (EM) radiation consists of electric and magnetic field components oscillating in planes perpendicular to each other and mutually perpendicular to radiation propagation through space. EM radiation can be classified as a wave, characterized by the properties of waves such as wavelength (denoted as λ) and frequency (represented by ν).
Wavelength is the distance between two consecutive peaks (the highest point) or troughs (the lowest point) in the wave. Frequency is the number of...
3.9K
Cells of the Adaptive Immune Response01:23

Cells of the Adaptive Immune Response

The T and B lymphocytes of the adaptive immune system develop from common lymphoid progenitor cells in the bone marrow. These progenitors give rise to precursors that eventually develop into both T and B lymphocytes. As these precursors mature, they gain the ability to detect and respond to foreign antigens in the body, a process known as immunocompetence. Additionally, these precursors acquire self-tolerance, a process that ensures they do not react to self-antigens. This intricate system...
8.9K
What is Natural Selection?01:32

What is Natural Selection?

Natural selection is an evolutionary process in which individuals with survival-promoting traits reproduce at higher rates. These favorable traits become more common within a population or species. Naturally selected traits initially arise via random genetic mutations. In order for selection to occur, there must be variation within a population, the trait controlling the variation must be heritable, and there must be an evolutionary advantage for variation in the trait.
129.5K