A Scientific Explanation Of Stem Cells And Stem Cell Research

562 words - 2 pages

In general, a cell can be defined as a stem cell if two basic criteria are met. First, stem cell is capable of self renewal for indefinite period throughout life while maintaining undifferentiated state, i.e., the cell can divide and produce two identical daughter cells and thereby maintains the stem cell pool. Second, stem cell possesses capacity for differentiate into specialised and functional progeny under the right conditions, or given the right signals. It may divide asymmetrically to yield an identical cell and a daughter cell that acquires a particular cell type’s properties, such as morphology, phenotype and functional physiology that classified it belongs to a particular tissue (Burns and Zon 2002; Preston et al. 2003).

Stem cell also can be classified into a hierarchy according to its differentiation potential (Figure 1). On the very top of the hierarchy is the totipotent stem cell. This cell is able to give rise to all kind of cell which constitute the embryonic and extra-embryonic tissues and then contribute to the entire organism, (e.g. the fertilized egg or zygote). The next level is the pluripotent stem cell (embryonic stem cell and embryonic germ cell) that is capable to form all tissues of the embryonic germ layer but do not contribute the formation of placenta or extra-embryonic tissues. Multipotent stem cell, on the other hand, can be derived from various adult organs and differentiate into lineages restricted cells of their germ (e.g. haemopoietic stem cell and mesenchymal stem cells). Finally, the derivative of differentiated multipotent stem cell-unipotent progenitor cell. This cell is already committed to tissue specific differentiation (e.g. myeloid progenitor and lymphoid progenitor).

There is also a population of cell found within a tumour that presented...

Find Another Essay On A Scientific Explanation of Stem Cells and Stem Cell Research

Stem Cells Research Essay

1595 words - 6 pages Omnibus Appropriations Act of 2009, which still contained the long-standing Dickey provision.Stem cell research remains an extremely controversial issue, which I think that many people have to learn all the facts. Many Americans are making decisions about stem cell research without knowing all the facts. With anti stem cell believers, in that they feel stem cell research destroys a fetus, and they do not understand the scientific method in which the

Benefits of Stem Cell Research Essay

2493 words - 10 pages then there is a contribution of the overall knowledge we are developing about stem cells and how they function. It would seem that the issue that the government is having with this issue is more about money and political standing than morality, since the logic and science do not support the assertions being presented by those voicing the objection. Stem cell research, regardless of a persons’ moral standing on the issue at hand, there is not a

Stem Cells-Research Paper

2088 words - 9 pages Stem Cells- Research Paper What are Stem Cells? Stem cells are undifferentiated biological cells that can differentiate into specialized cells and can divide through the process of mitosis to produce more stem cells. Mitosis being the a type of cell division that results in two daughter cells each having the same number and kind of chromosomes as the parent nucleus, typical of ordinary tissue growth. Stem cells are found in multicellular

Politics of Stem Cell Research

1658 words - 7 pages $3 billion dollar bond for human embryonic stem cell research. Schwarzenegger's father-in-law, Sergeant Shriver, is a victim of Alzheimer's disease, and the governor and his wife, Maria, someday hope that stem cells can cure their father. On the other hand, as for federal funding, there are mixed issues on that as well. "We have called on the new administration to make absolutely sure that no destructive stem cell research on embryos is done in

Ethics of stem cell research

1743 words - 7 pages and is fronted mainlyby religious organizations with the argument from the scientific community, that it is ethical.The main focus of the Christian community on embryonic stem cells, is on the fact that a humanlife is being used as a means for this medical research. In the Christian faith, the life is something thatlasts from conception to natural death, and they believe that when the embryo is destroyed for thismedical research that the child is

Embryonic Stem Cells Research

1033 words - 4 pages Embryonic stem cells research is a very conflicting subject in the United States. Some people think that it is morally and religiously incorrect as they are killing a human life at the first stage of life. While some think it is ok because the human life to them starts at the fetus or when the fetus can feel pain. In this paper we are going to discuss the total aspect of embryonic stem cell research: how the government takes play in the study

Cloning and Stem Cell Research

1974 words - 8 pages very interested in the debate over cloning and stem cell research. One group of representatives known as the New Democratic Coalition collectively wrote a letter to president Bush stating their support for stem cell research using all types of stem cells. The coalition asked the president to allow the recently issued National Institute of Health?s guidelines to remain in place because they provide tough requirements that enable scientists to

Stem Cell Research

1675 words - 7 pages research has also been limited by ethical and cost issues.Embryonic stem cells are required in two ways. The first is way of extraction is using fertilized embryos from fertility clinics. Usually there are leftover embryos when couples are tying to have a child. These in many cases are discarded so many scientist argue that using them for research is no different. The second way is therapeutic cloning. This is where a cell from the person who

Stem Cell Research

1618 words - 6 pages Embryonic Stem Cell Research: The controversy over whether it's right or wrong.Stem cell research brings forth many new and exciting ways of looking at science. "A lot of advancements have been made and our society has been greatly impacted by them (Mitus)." Aside from all of the positive outlooks in this field of science, stem cell research has many ethical controversies, while also having some scientific problems. Stem cells are

Stem Cell Research

963 words - 4 pages Should Stem Cell Research be prohibited? The ongoing bioethical controversy of stem cells research has been debated in political arenas across the world. As with any debate there are two sides to the issue. Scientific researchers want to expand their research into emerging fields like stem cell research in hopes of bettering medicine for the future. Human right activists and some religious groups are against this type of research because the

Stem Cell Research

1037 words - 4 pages Stem Cell Research Stem cells are a large focus of study in today's biomedical world. Stem cell research offers the hope of transplants being done without the sacrifice of another person losing an organ. There are many different pros and cons when it comes to discussing the use of stem cells. In order to develop an opinion of whether or not stem cells should be used, one must first understand what they are and how they are used

Similar Essays

Stem Cell Research Genetically Unstable Stem Cells

2690 words - 11 pages   A new study of problems in cloning suggests that embryonic stem cells are "surprisingly genetically unstable" in mice and perhaps in humans as well. This "may complicate efforts to turn the cells into cures," and interfere with efforts to produce all-purpose cell lines that could reliably become tissue of any desired type. "You may have to establish hundreds of lines to get the few you'd want to have," Dr. John Gearhart of Johns Hopkins

Stem Cell Research: Similarities And Differences Between Adult And Embryonic Stem Cells.

3649 words - 15 pages This essay deals with the different types of stem cells that exist and their different characteristics. I will also take a look at the different aspects of stem cell research, the problems, legal aspects and techniques involved.Because of their infinite versatility, embryonic stem cells provide a better foundation for research and development than adult stem cells. Adult stem cells are already roughly differentiated and require procedures to

Stem Cell Research What Are Stem Cells And Why Should We Continue Studying Them?

800 words - 3 pages What are stem cells and why should we continue studying them? Stem cells are the source of life. They bridge the gap from the embryo we start out as and the architecture we become. Stem cell research has been ongoing for more then twenty years. The more we study them the more potential we find. But with every new scientific discovery there is always controversy and stem cells are no different. The controversy arises due to the source of stem

Stem Cell Research: A Report

2339 words - 9 pages Stem cell research is the future of medicine. Stem cells hold the cures to many diseases, such as diabetes, paralysis and maybe even cancer. However, stem cells are a major issue in the United States at this current time. There are many people for and against the research of these valuable cells, in which scientists have only just begun to explore. One can see through studying these amazing cells that they hold much importance and to fully