How
can we identify a stem cell? Consider
what markers we might look
for and what functions.
In practice, stem cells are identified by whether they can regenerate tissue. For example, the defining test for bone marrow or hematopoietic stem cells (HSCs) is the ability to transplant the cells and save an individual without HSCs. This demonstrates that the cells can produce new blood cells over a long term. It should also be possible to isolate stem cells from the transplanted individual, which can themselves be transplanted into another individual without HSCs, demonstrating that the stem cell was able to self-renew.
Properties of stem cells can be illustrated in vitro, using methods such as clonogenic assays, in which single cells are assessed for their ability to differentiate and self-renew. Stem cells can also be isolated by their possession of a distinctive set of cell surface markers.
it possesses two properties:
Potency: the capacity to differentiate into specialized cell types. In the strictest sense, this requires stem cells to be either totipotent or pluripotent—to be able to give rise to any mature cell type, although multipotent or unipotent progenitor cells are sometimes referred to as stem cells. Apart from this it is said that stem cell function is regulated in a feed back mechanism.
Marker used for identification of stem cell are in following
figure
How can we identify a stem cell? Consider what markers we might look for and what...
How can stem cells replace faulty cells in the body? Multiple Choice Stem cells can be coaxed to differentiate into the needed specific cell type. Stem cells can mitotically divide, providing more stem cells to directly replace the faulty cells and their functions. Stem cells can meiotically divide, providing more stem cells to directly replace the faulty cells and their functions. Faulty cells can be coaxed to differentiate into stem cells and directly replace the faulty cells and their functions....
How was the hair follicle stem cell niche first identified? [1 mark] A through surgical removal of different regions of the hair follicle B by exploiting the property of slow cycling stem cells C by disruption of hair follicle genes in the mouse model D through the use of antibody staining against stem cell markers E by computer modelling of regenerating skin
How could an embryonic stem cell be used to repair a severed spine? A. Embryonic stem cells secrete proteins that repair all other cell types, including nerve cells. B. Embryonic stem cells can cause any other cell type to multiply. C. Embryonic stem cells are primarily involved with neural growth and development. D. Embryonic stem cells can grow into any other cell type, including a nerve cell.
QUESTION 9: One method to visualize different cell types is to use different markers that stain specific classes of proteins. GFAP is a common protein used to identify a certain cell type. Look up and record (A) what GFAP is, and (B) hypothesize what cell type would be stained if you used a GFAP-specific probe.
HOW POTENT ARE YOUR STEM CELLS? a cell that can produce all the hematopoietic cells in your body: _________ a cell that can develop into a complete adult organism + extraembryonic structures: _________ a cell that develop into a complete adult organism: ________
Which of the following might help US researchers to develop and study human stem cell lines in the future? The ability to import SC lines into the US. The establishment of stem cell banks. The ability of US companies to perform studies overseas, or in other more permissive countries. The lack of US federal law which rules on the legality of generating stem cells for research purposes. The use of iPS cells.
What is the current U.S. federal policy on stem cell use? How does this differ from stem cell policies of other countries?
please critique this post and ask one question relating to this post Stem cell or also known as immortal cell can self-renew (duplicate) or differentiate (specialize) which means it can turn into an organ cell. (Krimsky, 2015) For instance, if we have an stem cell in the liver and the liver needs a new cell, the stem cell will duplicate and one is going to be a duplicate of the original the other one's going to be a new liver...
1. What is a stem cell line? A. Stem Cells lined up in a row. B. Stem Cells in the lineage. C. A population of Stem Cells grown by scientists. D. A Stem Cell broken down, with it's contents placed in a line. 2. What is an Adult Stem Cell? A. A cell extracted from mature tissue. B. A cell extracted only from children. C. A cell extracted only from adults. D. Both A and C. E. None of the...
What is a stem cell? How does it apply to current health care research?