StudentShare solutions
Triangle menu

Stem Cell Research - The field of stem cell research - Essay Example

Not dowloaded yet

Extract of sample
Stem Cell Research - The field of stem cell research

Many of the signals required to induce formation of specialized adult cells must be present in these tumors, but unlike embryos, tumors generate adult cell types in a hopelessly undirected manner.
If a developing embryo is not to end up a mass of disorganized tissues, it must do more than generate adult cell types. Embryos must orchestrate and choreograph an elaborate stage production that gives rise to a functional organism. They must direct intricate cell movements that bring together populations of cells only to separate them again, mold and shape organs through the birth of some cells and the death of others, and build ever more elaborate interacting systems while destroying others that serve only transient, embryonic functions. Throughout the ceaseless building, moving, and remodeling of embryonic development, new cells with unique characteristics are constantly being generated and integrated into the overall structure of the developing embryo. Science has only the most rudimentary understanding of the nature of the blueprint that orders embryonic development. Yet, recent research has begun to illuminate both how specific adult cells are made as well as the central role of stem cells in this process.
The term "stem cell" is a general one for any cell that has the ability to divide, generating two progeny (or "daughter cells"), one of which is destined to become something new and one of which replaces the original stem cell. In this sense, the term "stem" identifies these cells as the source or origin of other, more specialized cells. There are many stem cell populations in the body at different stages of development. For example, all of the cells of the brain arise from a neural stem cell population in which each cell produces one brain cell and another copy of itself every time it divides. The very earliest stem cells, the immediate descendants of the fertilized egg, are termed embryonic stem cells, to distinguish them from populations that arise later and can be found in specific tissues (such as neural stem cells). These early embryonic stem cells give rise to all the tissues in the body, and are therefore considered "totipotent" or capable of generating all things.

Review of the Research
While the existence of early embryonic stem cells has been appreciated for some time, the potential medical applications of these cells have only recently become apparent. More than a dozen years ago, scientists discovered that if the normal connections between the early cellular progeny of the fertilized egg were disrupted, the cells would fall apart into a single cell suspension that could be maintained in culture. These dissociated cells (or embryonic stem cell "lines") continue to divide indefinitely in culture. A single stem cell line can produce enormous numbers of cells very rapidly. For example, one small flask of cells that is maximally expanded will generate a quantity of stem cells roughly equivalent in weight to the entire human population of the earth in less than sixty days. Yet despite their rapid proliferation, embryonic stem cells in culture lose the coordinated activity that distinguishes embryonic development from the growth of a teratoma. In fact, ...Show more

Summary

Embryonic development is one of the most fascinating of all biological processes. A newly fertilized egg faces the daunting challenge of not only generating all of the tissues of the mature animal but organizing them into a functionally integrated whole. Generating a wide range of adult cell types is not ability unique to embryos…
Author : gutmannbernadet
Stem Cell Research - The field of stem cell research essay example
Read Text Preview
Save Your Time for More Important Things
Let us write or edit the essay on your topic
"Stem Cell Research - The field of stem cell research"
with a personal 20% discount.
Grab the best paper

Related Essays

Stem Cell Research
The pluripotent stem cells also referred as embryonic cells have the ability to differentiate into every cell of the body while the multipotent (adult) stem cells can only differentiate into multiple cells but not all cell lineages in the body. Research on stem cells spans a broad range of scientific and medical fields.
6 pages (1500 words) Essay
Stem Cell Research
There are three main types of stem cells: embryonic, adult and induced pluripotent stem cells; of which, embryonic stem cells are found in early embryos and can have the potential of developing into any cell in the body. Adult stems are found in populations around the body after birth such as in the bone marrow and can develop into a limited range of cells, while induced pluripotent stem cells are grown in the laboratory and can be modified to be more specialized.
4 pages (1000 words) Essay
Should Stem cell research be federally funded
Although, the lines dividing opposing sides are not clear cut, the positions center around two polarized arguments. On one hand, proponents of federal funding for stem cell research cite the great potential of research findings for application to actual treatment.
12 pages (3000 words) Essay
Stem cell research
The stem cells have practically changed the outlook of scientists and physicians towards cell generation system in human body .Moreover, the patients all over the world are offered a ray of hope to step into a new life with confirmed health. However, controversy surrounds stem cell therapy because it involves the technique of destruction of a pre-embryo or usage of therapeutical cloning.
8 pages (2000 words) Essay
Human Embryonic Stem Cell Research
After the isolation of embryonic stem cell in 1998, stem cell research scientists presumed they had found a solution to several underlying medical problems that had been a mystery for long. Little did they know that people using misleading points of view would oppose the unearthing leading to restrictive measures and withholding of government funds for this project.
5 pages (1250 words) Essay
Stem Cell Research
The author discusses ethical and moral arguments of using embryonic stem cells. Arguments of groups or sectors opposing the use of embryonic stem cells revolve around the destruction of life because they consider the cell in the embryo as not just a simple cell but life itself or the beginning of a human being.
12 pages (3000 words) Essay
Stem Cell Research
When locomotives were invented, simple, god-fearing folks looked upon it as the work of the devil, let loose on this planet to derail the honest, Christian scheme of things. It is no wonder then, that as we are poised to take yet another giant leap forward - in the field of medicine, this time - politics, emotions and religious beliefs have queered the pitch once again, and erected all the usual stumbling blocks.
3 pages (750 words) Essay
Stem cell research
l is a type of cell that has the ability to divide or multiply indefinitely in culture and become any one of more than 200 different types of tissue cells in the body, such as muscle cells, blood cells, nerve cells and even new teeth. In the recent researches scientists hope to
5 pages (1250 words) Essay
Stem Cell Research Legislation
strate the potential benefits of using stem cells to better the human condition, thus the Senate Labor and Human Resources Committee voted in favor of a bill designed to end President George H.W. Bush’s federal funding ban involving experiments allowing tissue transplantation
4 pages (1000 words) Essay
Stem Cell Research Ethical Dilemma
Recently, there has been a lot of debate concerning stem cell research because of the unique nature of stem cells that can develop into different types of cells within the body through growth and
4 pages (1000 words) Essay
Get a custom paper written
by a pro under your requirements!
Win a special DISCOUNT!
Put in your e-mail and click the button with your lucky finger
Your email
YOUR PRIZE:
Apply my DISCOUNT
Comments (0)
Rate this paper:
Thank you! Your comment has been sent and will be posted after moderation