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相关概念视频

Stem Cell Culture01:17

Stem Cell Culture

5.2K
Stem cell research aims to find ways to use stem cells to regenerate and repair cellular damage. Over time, most adult cells undergo the wear and tear of aging and lose their ability to divide and repair themselves. Stem cells do not display a particular morphology or function. Adult stem cells, which exist as a small subset of cells in most tissues, keep dividing and can differentiate into a number of specialized cells generally formed by that tissue. These cells enable the body to renew and...
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Stem Cell Niche01:26

Stem Cell Niche

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The stem cell niche is the dynamic microenvironment where stem cells reside. Inside these niches, the cells may remain undifferentiated, undergo high self-renewal, or become lineage-specific progenitors. Stem cells coexist with other niche cells, such as stromal cells. They also interact closely with the ECM. Cell-cell and cell-matrix communication occur via adhesion molecules or soluble factors that signal the stem cells and determine their fate. Stromal cells also provide survival signals to...
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Distinctive Features of Adult Stem Cells vs Cancer Stem Cells01:18

Distinctive Features of Adult Stem Cells vs Cancer Stem Cells

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A stem cell is an unspecialized cell that can divide without limit as needed and can, under specific conditions, differentiate into specialized cells.
Adult stem cells
Adult stem cells are tissue-specific; hence, they divide to develop the tissue from which they originate. One type of adult stem cell is the epithelial stem cell, which gives rise to the keratinocytes in the multiple layers of epithelial cells in the epidermis of the skin. Adult bone marrow has three distinct types of stem cells:...
3.5K
Adult Stem Cells01:33

Adult Stem Cells

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Stem cells are undifferentiated cells that divide and produce more stem cells or progenitor cells that differentiate into mature, specialized cell types. All the cells in the body are generated from stem cells in the early embryo, but small populations of stem cells are also present in many adult tissues including the bone marrow, brain, skin, and gut. These adult stem cells typically produce the various cell types found in that tissue—to replace cells that are damaged or to continuously...
29.9K
Embryonic Stem Cells00:58

Embryonic Stem Cells

28.5K
Embryonic stem (ES) cells are undifferentiated pluripotent cells, meaning they can produce any cell type in the body. This gives them tremendous potential in science and medicine since they can generate specific cell types for use in research or to replace body cells lost due to damage or disease.
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Stem Cell Therapy for Tissue Regeneration01:21

Stem Cell Therapy for Tissue Regeneration

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Stem cell therapy is a method used in regenerative medicine to repair and restore function to damaged tissues and organs. Stem cells have the potential to proliferate and differentiate into various tissue types, making them ideal candidates for tissue regeneration. For example, hematopoietic stem cell transplants are commonly used in blood cancer treatment to replenish damaged bone marrow and restore healthy blood cells.
Types of Stem Cells used in Stem Cell Therapy
The two main cell...
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相关实验视频

Updated: Jul 12, 2025

Assessing Stem Cell DNA Integrity for Cardiac Cell Therapy
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什么算是STEM,它是否重要?

Rebecca M Adler1, Mingkai Xu1, Bethany Rittle-Johnson1

  • 1Department of Psychology and Human Development, Vanderbilt University, Nashville, Tennessee, USA.

The British journal of educational psychology
|October 31, 2023
PubMed
概括
此摘要是机器生成的。

学生 学生 学生 学生 学生

关键词:
在STEM职业生涯中感兴趣的兴趣.性别 性别 性别 性别 性别数学动机 数学动机科学动机科学动机

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科学领域:

  • 在STEM教育方面.
  • 职业发展 职业发展
  • 心理学 心理学 心理学

背景情况:

  • 精确测量科学,技术,工程和数学 (STEM) 职业兴趣需要了解学生对STEM职业的看法.
  • 学生对STEM职业的概念化是复杂的,并不总是与传统的定义保持一致.

研究的目的:

  • 调查学生是否将医学职业纳入他们对STEM的定义.
  • 检查预测STEM职业兴趣的因素是否根据医疗职业是否包括在STEM定义中而有所不同.

主要方法:

  • 研究1:在线问卷调查125名美国大学生.
  • 研究2:对455名美国10年级学生进行调查,评估数学成绩,动机和职业兴趣.

主要成果:

  • 医疗职业被视为STEM比非STEM更常见,但比传统的STEM职业少.
  • 科学重要性值预测了对STEM+医学职业的兴趣,但不是传统的STEM.
  • 性别差异出现了:男孩喜欢传统的STEM,女孩喜欢STEM+医学.

结论:

  • 学生对STEM的理解是微妙的,而不是严格的二进制.
  • 研究人员应在研究,编码和出版物中明确定义STEM,以确保清晰度和可比性.