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関連する概念動画

Viral Recombination00:57

Viral Recombination

25.2K
Cells are sometimes infected by more than one virus at once. When two viruses disassemble to expose their genomes for replication in the same cell, similar regions of their genomes can pair together and exchange sequences in a process called recombination. Alternatively, viruses with segmented genomes can swap segments in a process called reassortment.
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Viral Structure00:56

Viral Structure

74.7K
Viruses are extraordinarily diverse in shape and size, but they all have several structural features in common. All viruses have a core that contains a DNA- or RNA-based genome. The core is surrounded by a protective coat of proteins called the capsid. The capsid is composed of subunits called capsomeres. The capsid and genome-containing core are together known as the nucleocapsid.
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Viral Mutations00:36

Viral Mutations

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A mutation is a change in the sequence of bases of DNA or RNA in a genome. Some mutations occur during replication of the genome due to errors made by the polymerase enzymes that replicate DNA or RNA. Unlike DNA polymerase, RNA polymerase is prone to errors because it is not capable of “proofreading” its work. Viruses with RNA-based genomes, like HIV, therefore accrue mutations faster than viruses with DNA-based genomes. Because mutation and recombination provide the raw material...
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Size and Structure of Viral Genomes01:26

Size and Structure of Viral Genomes

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Viral genomes exhibit remarkable diversity in size, structure, and composition, influencing their replication strategies and interactions with host cells. These genomes consist of either DNA or RNA and may be linear or circular. Additionally, they can be single-stranded or double-stranded, with each configuration affecting how the virus propagates within a host. RNA viruses, for instance, generally have smaller genomes than DNA viruses, a factor that contributes to their high mutation rates and...
807
Viral Replication: Lytic Cycle01:20

Viral Replication: Lytic Cycle

1.6K
Bacteriophages, or phages, are viruses that specifically infect bacteria. Among them, T-even bacteriophages, such as T4, exhibit a well-characterized lytic replication cycle in Escherichia coli (E. coli). This process ensures the rapid proliferation of the virus while ultimately leading to the destruction of the bacterial host.Attachment and DNA InjectionThe infection process begins with the recognition and binding of the T4 phage to the E. coli cell surface. Tail fibers of the phage...
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Immune Response Against Viral Pathogens01:29

Immune Response Against Viral Pathogens

2.1K
The immune system's response to viral infections is a complex and coordinated process involving natural killer (NK) cells, T cell-mediated responses, and antibody-mediated responses.
NK Cells
NK cells are a crucial part of our innate immune system, acting as the first line of defense against viral infections. These cells can recognize and kill infected cells without prior exposure to the virus, effectively slowing down the spread of infection. Additionally, NK cells produce proinflammatory...
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関連する実験動画

Updated: Feb 7, 2026

Purification of Viral DNA for the Identification of Associated Viral and Cellular Proteins
08:26

Purification of Viral DNA for the Identification of Associated Viral and Cellular Proteins

Published on: August 31, 2017

14.2K

ウイルス性胃腸炎

Krisztián Bányai1, Mary K Estes2, Vito Martella3

  • 1Institute for Veterinary Medical Research, Centre for Agricultural Research, Hungarian Academy of Sciences, Budapest, Hungary.

Lancet (London, England)
|July 21, 2018
PubMed
まとめ
この要約は機械生成です。

ロタウイルスワクチンは5歳未満の子供の胃腸炎の入院を大幅に減少させます. ノロウイルスの予防は衛生と環境の消毒に焦点を当てており,ワクチンはまだ開発中です.

さらに関連する動画

Using a Pan-Viral Microarray Assay Virochip to Screen Clinical Samples for Viral Pathogens
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Using a Pan-Viral Microarray Assay Virochip to Screen Clinical Samples for Viral Pathogens

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Preparation of Viral DNA from Nucleocapsids
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Preparation of Viral DNA from Nucleocapsids

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関連する実験動画

Last Updated: Feb 7, 2026

Purification of Viral DNA for the Identification of Associated Viral and Cellular Proteins
08:26

Purification of Viral DNA for the Identification of Associated Viral and Cellular Proteins

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Using a Pan-Viral Microarray Assay Virochip to Screen Clinical Samples for Viral Pathogens
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Preparation of Viral DNA from Nucleocapsids
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Preparation of Viral DNA from Nucleocapsids

Published on: August 16, 2011

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科学分野:

  • ウイルス学
  • 公衆衛生
  • 流行病学について

背景:

  • 腸内ウイルス,特にロタウイルスとノロウイルスは,胃腸炎の主な原因です.
  • ロタウイルスは幼い子供に不釣り合いな影響を及ぼし,特に発展途上国では大きな死亡率と入院率を引き起こします.
  • ノロウイルスは,すべての年齢層で発生する食品感染症の主な原因です.

研究 の 目的:

  • ロタウイルスワクチンの入院への影響を検討する.
  • ノロウイルス感染症の現在の予防戦略について議論する.
  • ノロウイルスワクチン開発とウイルス性胃腸炎の治療の現状を強調する.

主な方法:

  • 各国のロタウイルスワクチン導入データ分析
  • 既定のノロウイルス予防措置のレビュー
  • ノロウイルスワクチンの進行中の臨床試験の要約

主要な成果:

  • ロタウイルスワクチン接種は,ロタウイルスに関連した入院数が49%から89%まで減少し,すべての原因による胃腸炎の入院数が2年以内に17%から55%まで減少しました.
  • 現在のノロウイルス対策は衛生と消毒に依存し,様々な株に対するワクチンの有効性は不明である.
  • 流体と電解質の補充はウイルス性胃腸炎の主要な治療法です.

結論:

  • ロタウイルスワクチンは,小児性胃腸炎の入院を減らすのに非常に有効です.
  • 効果的なノロウイルスワクチンは必要であり,現在の予防戦略は維持されなければならない.
  • 耐久性のあるノロウイルスワクチンと改善された胃腸炎管理のためのさらなる研究が必要です.