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Cluster Sampling Method01:20

Cluster Sampling Method

Appropriate sampling methods ensure that samples are drawn without bias and accurately represent the population. Because measuring the entire population in a study is not practical, researchers use samples to represent the population of interest.
To choose a cluster sample, divide the population into clusters (groups) and then randomly select some of the clusters. All the members from these clusters are in the cluster sample. For example, if you randomly sample four departments from your...
Vesicular Tubular Clusters01:45

Vesicular Tubular Clusters

After budding out from the ER membrane, some COPII vesicles lose their coat and fuse with one another to form larger vesicles and interconnected tubules called vesicular tubular clusters or VTCs. These clusters constitute a compartment at the ER-Golgi interface known as ERGIC (Endoplasmic Reticulum Golgi Intermediate Compartment). The ERGIC is a mobile membrane-bound cargo transport system that sorts proteins secreted from ER and delivers them to the Golgi.
With the help of motor proteins such...
Mnemonic Devices01:23

Mnemonic Devices

Mnemonic devices are cognitive tools that facilitate memory retention by linking new information to familiar patterns or organizational strategies. These techniques are beneficial for remembering complex or lengthy sets of information by simplifying and structuring them in easily retrievable ways.
Acronyms
Acronyms are created by using the initial letters of a series of words to form a new word or phrase. This approach condenses complex information into a single, memorable entity. For example,...
System of Memory01:23

System of Memory

Memory is categorized into three major systems: sensory memory, short-term memory (STM), and long-term memory (LTM). These systems differ in their capacity and the duration for which they can hold information. Sensory memory captures raw sensory input from the environment, holding it for just a few seconds or less. For example, on hearing a brief, loud sound, like a car horn honking, the sound seems to linger in the mind for a moment even after it stops. This is an instance of sensory memory...
Chunking01:12

Chunking

Chunking is a powerful cognitive technique that improves short-term memory retention by organizing information into smaller, more manageable units. The brain, limited by working memory capacity, can more easily process and store information when it is divided into "chunks" rather than presented as discrete, unrelated elements. Chunking is especially useful when dealing with large amounts of information, such as numerical sequences, words, or complex ideas.
The principle behind chunking is...
Flashbulb Memory01:16

Flashbulb Memory

A flashbulb memory is a highly vivid and detailed memory, often linked to events of significant emotional impact. These memories stand out in contrast to everyday memories due to their clarity and the precision with which they are recalled. The strong emotions associated with the event act as a catalyst, ensuring that specific details, such as one's location, actions, and even peripheral elements, are etched into memory with remarkable accuracy. For example, many people can vividly recall where...

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関連する実験動画

Updated: May 8, 2026

Large-scale Reconstructions and Independent, Unbiased Clustering Based on Morphological Metrics to Classify Neurons in Selective Populations
12:27

Large-scale Reconstructions and Independent, Unbiased Clustering Based on Morphological Metrics to Classify Neurons in Selective Populations

Published on: February 15, 2017

覚えておくべきクラスタ.

Gerd A Blobel1, Ross C Hardison

  • 1Division of Hematology, The Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA; Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA 19104, USA.

Cell
|August 20, 2013
PubMed
まとめ
この要約は機械生成です。

転写因子結合部位はコヘシンを含む密集したクラスターを形成し,細胞分裂を通じて遺伝子発現記憶を維持するのに役立ちます. この発見は,転写記憶のメカニズムに光を当てています.

さらに関連する動画

A Visual Guide to Sorting Electrophysiological Recordings Using 'SpikeSorter'
10:31

A Visual Guide to Sorting Electrophysiological Recordings Using 'SpikeSorter'

Published on: February 10, 2017

関連する実験動画

Last Updated: May 8, 2026

Large-scale Reconstructions and Independent, Unbiased Clustering Based on Morphological Metrics to Classify Neurons in Selective Populations
12:27

Large-scale Reconstructions and Independent, Unbiased Clustering Based on Morphological Metrics to Classify Neurons in Selective Populations

Published on: February 15, 2017

A Visual Guide to Sorting Electrophysiological Recordings Using 'SpikeSorter'
10:31

A Visual Guide to Sorting Electrophysiological Recordings Using 'SpikeSorter'

Published on: February 10, 2017

科学分野:

  • ゲノミクスゲノミクスとは
  • 分子生物学は分子生物学である.
  • 細胞生物学 細胞生物学

背景:

  • 遺伝子発現パターンが細胞サイクルを通してどのように維持されるかを理解することは,細胞のアイデンティティと機能にとって極めて重要です.
  • 転写因子 (TF) は遺伝子発現の重要な調節因子ですが,細胞記憶を維持する上でそれらの正確な組織と役割は完全に理解されていません.

研究 の 目的:

  • 単一の細胞タイプ内の転写因子結合部位の空間的組織を調査する.
  • これらの結合部位の組織と潜在的な機能におけるコヘシンの役割を探求する.

主な方法:

  • 大規模な転写因子位置分析は,単一の細胞タイプで行われました.
  • コヘシン占有度は,転写因子結合部位と併せて分析されました.

主要な成果:

  • 転写因子占有地の大部分は,最大100の因子を含む密集したクラスター内で発見されました.
  • これらのクラスターは,ほぼ常にコヘシンを含んでいた.
  • コヘシンはミトーシス中にこれらのクラスターサイトに留まっていた.

結論:

  • コヘシンと関連した複写因子の密集したクラスターは,ゲノム組織の一般的な特徴である.
  • ミトーシス中のこれらの部位でのコヘシン保持は,細胞サイクル全体で転写記憶を確立または維持する上で潜在的な役割を果たすことを示唆しています.