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Stem cell

Definition

noun, plural: stem cells

(1) An unspecialized cell characterized by the ability to self-renew by mitosis while in undifferentiated state, and the capacity to give rise to various differentiated cell types by cell differentiation.

(2) A cell that has not yet acquired a special function.


Supplement

Stem cells give rise to various cells when they acquire special function through a process called cellular differentiation. They are found in fetuses, embryos, and certain adult tissues. In a developing embryo, stem cells may differentiate into all of the specialized embryonic tissues. In adult organisms, stem cells act as a repair system replacing tissues damaged by disease or injury. They also maintain the normal turnover of regenerative organs such as blood, skin, and intestinal tissues.

Stem cells, such as embryonic stem cells, can now be grown in vitro for use in research or in medicine, although, their use remains controversial.


Related phrases: embryonic stem cells, autologous embryonic stem cells.
Synonym: progenitor cells.
Compare: differentiated cell, specialized cell.
See also: potency, cell differentiation.


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Stem Cells and Cell division?

Cell division demands lot of resources in the form of energy. Therefore, it is easy to have ... Therefore, normal cells can continue doing their tissue function whereas adult stem cells perform their function i.e. dividing and replacing damaged cells. Also, the question ...

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by supersapien
Sun Sep 28, 2014 7:20 pm
 
Forum: Cell Biology
Topic: Stem Cells and Cell division?
Replies: 2
Views: 1972

Stem Cells

I think you can localize stem cells in lower organisms such as C. elegance by flurochrome labeled antibodies specific to specific proteins ...

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by josem
Wed Sep 03, 2014 9:32 pm
 
Forum: Genetics
Topic: Stem Cells
Replies: 5
Views: 5761

Re: Totipotent Stem Cell From Molecular Components

... never the case). Rather I am saying that for a particular protein in my stem cell at least, the amount of that particular protein is the average of the gene expression ...

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by caters
Fri Aug 01, 2014 1:42 am
 
Forum: Cell Biology
Topic: Totipotent Stem Cell From Molecular Components
Replies: 2
Views: 4566

Stem Cells and Cell division?

Hello, I am well aware of the concepts of Stem Cells (Cell specialization) and Cell Division (Mitosis), however I am unsure of where their applications ...

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by CaptainCovalency
Thu Jul 10, 2014 3:54 am
 
Forum: Cell Biology
Topic: Stem Cells and Cell division?
Replies: 2
Views: 1972

Re: Totipotent Stem Cell From Molecular Components

A1: good luck, even Venter haven't managed that yet. A3: and how will you get the protein? Are you really sure that the stemm cells contain all protein in the same amount? A4: amplicon is the result of PCR. You need some template though, in your case probably the DNA.

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by JackBean
Tue May 13, 2014 5:04 pm
 
Forum: Cell Biology
Topic: Totipotent Stem Cell From Molecular Components
Replies: 2
Views: 4566
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