Definitions for stem cell
stem cell

Princeton's WordNetRate this definition:0.0 / 0 votes

1. stem cellnoun

   an undifferentiated cell whose daughter cells may differentiate into other cell types (such as blood cells)

WiktionaryRate this definition:0.0 / 0 votes

1. stem cellnoun

   A primal undifferentiated cell from which a variety of other cells can develop through the process of cellular differentiation.

WikipediaRate this definition:0.0 / 0 votes

1. Stem cell

   In multicellular organisms, stem cells are undifferentiated or partially differentiated cells that can differentiate into various types of cells and proliferate indefinitely to produce more of the same stem cell. They are the earliest type of cell in a cell lineage. They are found in both embryonic and adult organisms, but they have slightly different properties in each. They are usually distinguished from progenitor cells, which cannot divide indefinitely, and precursor or blast cells, which are usually committed to differentiating into one cell type. In mammals, roughly 50–150 cells make up the inner cell mass during the blastocyst stage of embryonic development, around days 5–14. These have stem-cell capability. In vivo, they eventually differentiate into all of the body's cell types (making them pluripotent). This process starts with the differentiation into the three germ layers – the ectoderm, mesoderm and endoderm – at the gastrulation stage. However, when they are isolated and cultured in vitro, they can be kept in the stem-cell stage and are known as embryonic stem cells (ESCs). Adult stem cells are found in a few select locations in the body, known as niches, such as those in the bone marrow or gonads. They exist to replenish rapidly lost cell types and are multipotent or unipotent, meaning they only differentiate into a few cell types or one type of cell. In mammals, they include, among others, hematopoietic stem cells, which replenish blood and immune cells, basal cells, which maintain the skin epithelium, and mesenchymal stem cells, which maintain bone, cartilage, muscle and fat cells. Adult stem cells are a small minority of cells; they are vastly outnumbered by the progenitor cells and terminally differentiated cells that they differentiate into.Research into stem cells grew out of findings by Canadian biologists Ernest McCulloch, James Till and Andrew J. Becker at the University of Toronto and the Ontario Cancer Institute in the 1960s. As of 2016, the only established medical therapy using stem cells is hematopoietic stem cell transplantation, first performed in 1958 by French oncologist Georges Mathé. Since 1998 however, it has been possible to culture and differentiate human embryonic stem cells (in stem-cell lines). The process of isolating these cells has been controversial, because it typically results in the destruction of the embryo. Sources for isolating ESCs have been restricted in some European countries and Canada, but others such as the UK and China have promoted the research. Somatic cell nuclear transfer is a cloning method that can be used to create a cloned embryo for the use of its embryonic stem cells in stem cell therapy. In 2006, a Japanese team led by Shinya Yamanaka discovered a method to convert mature body cells back into stem cells. These were termed induced pluripotent stem cells (iPSCs).

ChatGPTRate this definition:0.0 / 0 votes

1. stem cell

   A stem cell is an unspecialized cell that has the ability to develop into many different cell types in the body. It can divide indefinitely to produce more stem cells and under specific conditions, it can be induced to become tissue or organ-specific cells with special functions. There are two main types of stem cells: embryonic stem cells that exist only at the earliest stages of development and adult stem cells found throughout the body after development. They play a major role in the body’s healing process, growth, and are crucial in the research and treatment of various diseases due to their regenerative properties.

WikidataRate this definition:3.5 / 2 votes

1. Stem cell

   Stem cells are biological cells found in all multicellular organisms, that can divide and differentiate into diverse specialized cell types and can self-renew to produce more stem cells. In mammals, there are two broad types of stem cells: embryonic stem cells, which are isolated from the inner cell mass of blastocysts, and adult stem cells, which are found in various tissues. In adult organisms, stem cells and progenitor cells act as a repair system for the body, replenishing adult tissues. In a developing embryo, stem cells can differentiate into all the specialized cells, but also maintain the normal turnover of regenerative organs, such as blood, skin, or intestinal tissues. There are three accessible sources of autologous adult stem cells in humans: ⁕Bone marrow, which requires extraction by harvesting, that is, drilling into bone, ⁕Adipose tissue, which requires extraction by liposuction, and ⁕Blood, which requires extraction through pheresis, wherein blood is drawn from the donor, passed through a machine that extracts the stem cells and returns other portions of the blood to the donor.

Matched Categories

1. • Somatic Cell

How to pronounce stem cell?

1. Alex

   US English

   David

   US English

   Mark

   US English

   Daniel

   British

   Libby

   British

   Mia

   British

   Karen

   Australian

   Hayley

   Australian

   Natasha

   Australian

   Veena

   Indian

   Priya

   Indian

   Neerja

   Indian

   Zira

   US English

   Oliver

   British

   Wendy

   British

   Fred

   US English

   Tessa

   South African

How to say stem cell in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of stem cell in Chaldean Numerology is: 3

2. Pythagorean Numerology

   The numerical value of stem cell in Pythagorean Numerology is: 8

Examples of stem cell in a Sentence

1. Arthur Caplan:

   Doris Tyler ended up having a crowdfunding campaign, went to a clinic in Georgia, and then ended up being blinded by the so-called stem cell procedure there.

2. Jenna LoGiudice:

   The infant will receive about half the iron and stem cell-rich blood that was left in the placenta.

3. Ravindra Gupta:

   Our findings show that the success of stem cell transplantation as a cure for HIV, first reported nine years ago in the Berlin patient, can be replicated.

4. Leigh Turner:

   It seems likely that some clients of stem cell clinics are propelled by a mixture of hope and desperation.

5. Robert Gippert:

   The essence of stem-cell treatment is that we can achieve an improvement in the quality of life of patients who cannot be helped by operations or medical treatment, just like in humans, the worn out joint of Igor the tiger will heal due to the regenerative and self-healing effects of stem cells, without the use of external materials.

References

1. ^ Princeton's WordNet
   http://wordnetweb.princeton.edu/perl/webwn?s=stem cell
2. ^ Wiktionary
   https://en.wiktionary.org/wiki/Stem_Cell
3. ^ Wikipedia
   https://en.wikipedia.org/wiki/Stem_Cell
4. ^ ChatGPT
   https://chat.openai.com
5. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=stem cell