tissues in organisms. With further research and understating‚ these cells can be used in medicine to cure a wide range of diseases. The most important type of stem cell to humans is the pluripotent stem cell which is usually obtained from human embryos. This has sparked controversy in many aspects of human life. In this paper‚ we will concentrate on animal and human stem cell research‚ and its impact on society. A Brief Description Of The Technology And An Explanation Of The Associated Science
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various types of viruses. Because of the ability to alter their tropism and to adapt to a new host species‚ many viruses become capable of growing in chick embryo tissues wherein they frequently attain a much higher concentration than in the tissues of the natural host. STRUCTURE OF AN EGG The extra-embryonic membranes of the chick embryo arise from three germinal layers: the endoderm‚ mesoderm and ectoderm (Fig. 1). The dorsal somatopleure consists of ectoderm on one side and mesoderm on the
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research is based on the harvesting of cells from the early stages of the embryo once fertilization has occurred. These stem cells have a great significance as these cells are pluripotent (Hug‚ 2015). The pluripotentcy of these cells allow scientists to differentiate these cells into many different cells which allow advances to be made to science in regenerative medicine. This method has brought about controversy as many people believe harvesting from fertilised embryos as direct killing of potential
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Stem Cells: The Lethal Lifesaver Stem Cells are the first cells that begin a human life‚ but some people have a problem with using them because of where they come from. So‚ the question is which is more important‚ the death of embryos or the saving of lives? Stem cells are the cells that can be whatever they need to‚ depending on what is needed. The Webster dictionary defines a stem cell as “An unspecialized cell that gives rise to differentiated cells.”. These cells have the potential to save thousands
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cloning‚ which creates a living human child. Also‚ he points out‚ therapeutic cloning is not therapeutic for the embryo. In the second part of the viewpoint‚ Saunders builds on Prentice’s argument and goes even
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blocks of the body because as an embryo‚ the body is formed out of stem cells that transform into the various specialized cells in the body. Most stem cells in adults are cells types like muscle‚ bone or nerves‚ but they don’t preform a specialized function. When needed‚ the stem cells transform into a cell that performs a specialized function. In adults‚ stem cells are most commonly obtained from bone marrow. Other places to acquire stem cells include fetuses‚ embryos and umbilical cords. Stem cells
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Ethical Dilemma (Part 1) In your CLC group‚ select one of the following three options and view the video related to your chosen topic (a description of each is provided along with a link to access the electronic media): Dilemma 1: Embryo Harvesting and Freezing/Genetic Manipulation (Posthumous Conception Case) Ethical issues related to case: http://www.youtube.com/watch?v=EIenB7qgIVk Washington Post article of Karen Capato Case: http://articles.washingtonpost.com/2012-03-19/politics/354500
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Embryos are essentially microscopic human beings. Regardless of what good they may provide to the field of medicine‚ the ethical controversies surrounding embryonic stem cell research are profound. Stem cells‚ the cells used by the human body to replenish damaged tissue‚ are found in both embryonic and adult form. At the adult level‚ stem cells can be extracted from bone marrow‚ but the real ethical debate arises when embryonic stem cells are introduced. “Pluripotent” embryonic stem cells are among
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treatment. Embryonic Stem cells were first found in 1981 using mice and monkeys. In the year 1995 the first human embryo was used for research. In 1998 researchers successfully isolated the embryonic stem cell
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What is the ethical issue regarding the harvesting and use of these stem cells? The main controversial issue of this type of research is the status of the human embryo. When the inner cell mass of the embryo is taken‚ the embryo dies. The reason for this is because the inner cell mass is what forms the three germ layers of the human body‚ so without it the embryo will no longer develop. People who are against the harvesting‚ research‚ and use of these special cells are known to
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