STEM CELLS® TISSUE-SPECIFIC STEM CELLS Current Concepts in Bone Marrow Microenvironmental Regulation of Hematopoietic Stem and Progenitor Cells Julianne N. P. Smith and Laura M. Calvi Key words. Adult haematopoietic stem cells Bone marrow Bone marrow stromal cells Hematopoiesis Hemopoietic stem cells Osteoblast Stem cellmicroenvironment interactions Endothelial cell ABSTRACT “Within the microanatomy of mammalian bone‚ hematopoietic stem and progenitor cells (HSPCs) interact with numerous
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Suddenly‚ stem cells are everywhere. Once relegated to the depths of esoteric health journals‚ the microscopic clusters have made their way to the nation�s front pages. The complexity and drama surrounding these relatively simple cells has increased due a ticking clock: By the end of the month‚ President Bush is scheduled to decide whether to continue federal funding for stem cell research. The question of using stem cells for research is intrinsically scientific‚ and yet has become the political
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After reading the “‘Bubble baby’ stem cell” paper I have come to the conclusion that stem cell research is an excellent thing. The reason why I think that is if we never do research and create a cure for “Bubble baby disease” then we will continue to lose babies. But‚ if we risk a few lives of babies for research in the long run it will save millions if not billions of lives. In this essay I will give three reasons on why I think stem cell research is a great thing. “Bubble baby disease.” In my
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2012 Biology Period 1 Stem Cell Debate I think that we should stick to researching adult stem cells because it is more ethical‚ better success rate than embryonic cells‚ and they are more knowledgeable to the people. Adult stem cells are controversial but way less than embryonic stem cells. Stem cells are found in all multicellular organisms and are divided through mitosis. Adult stem cells are found in various tissues. Adult stem cells can be regenerated into specialized cells just not as many. Embryonic
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Stem cells. To be or not to be It is one of the most evocative phrases in the lexicon of science: stem cells research‚ the creation of cells that can be used to make people healthier‚ stronger and even can treat cancer – the greatest killer of our time. Stem cells have been touted as one of the most significant discoveries in medical history! The ongoing research in this field hold high hopes that in a few years stem cells used in genetic therapy may be able to cure or alleviate the suffering
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Stem Cell Culture Human embryonic stem cells are pluripotent stem cells derived from the inner cell mass of the blastocyst‚ an early-stage embryo. To culture these stem cells under controlled environments‚ one first must have a growth medium. This growth medium is made with DMEM/F12‚ which is cell culture medium‚ a 20 percent Knockout Serum Replacement‚ 100 μM β-Mercaptoethanol‚ 1 percent non-essential Amino Acid‚ and a Basic Fibroblast Growth Factor. This medium is then changed out everyday
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advancing‚ every day we learn more about how life works and through this we increase our knowledge and understanding of health and disease. Even in the last ten years we have had numerous scientific advancements‚ from the human genome project to stem cell research. I hope to one day contribute to this understanding through the knowledge and skills I gain from this course. I have always had an interest in science‚ especially in terms of how illness and disease affects the body. I developed an interest
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Stem cell research is often at the forefront of heated ethical debates due to its assessment of human life. If stem cell research cannot be ethically defended‚ then it should not be conducted. “You cannot defend a study ethically unless the presumed cost is lower than expected benefits. The cost-benefit analysis of scientific research needs to include human/animal discomfort/risks‚ environmental issues‚ material costs‚ etc” which is necessary to support the positive outcome which the research claims
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The ethical and political controversy is centered on extracting the stem cells from the embryo. The only way to obtain the cells is by destroying the embryo‚ placing the moral status of an embryo into question. This research plays with two important principles: “the duty to prevent or alleviate suffering‚ and the duty to respect the value of human life” (Hug 108). Embryonic stem cell research poses an unruly question that places one in a position where one principle is of higher
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Embryonic VS Adult Stem Cell Research Stem cell research just by saying its name creates an uneasy feeling because it is such a controversial topic. There are many ethical and moral issues that make people uneasy because they can’t decided whether they should side with the more ethical side of this research‚ adult stem cell‚ or the more well known‚ embryonic stem cell. This ethical issue between the two research categories gives rise to another issue that isn’t usually discussed. This issue is
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