Anatomy and Physiology Answer Key

For this reason asc therapies are already in use eg

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Unformatted text preview: ne is derived must have been created for reproductive purposes but is subsequently discarded and must not have had the possibility of developing further as a human being. • Informed consent allowing the donation of the embryo and subsequent ownership of it. • Policies governing the use of the stem cell lines. Technically: Human embryonic stem cell (hESC) research has the potential to allow better understanding of normal cell development and subsequently the possible correction of serious medical conditions such as cancer and birth defects. Another potential application of stem cells is in making replacement cells and tissues for therapeutic purposes e.g. in treating Parkinson's and Alzheimer's diseases, spinal cord injury, stroke, burns, heart disease, diabetes, osteoarthritis and rheumatoid arthritis. Using hESCs poses formidable technical challenges as scientists must learn to control the development of pluripotent stem cells into all the different types of body cells and overcome the threat of rejection by the patient's immune system. Adult stem cell research is not new whereas hESC research is still in its infancy, lacking funding and support, and there may even be laws banning it in some countries. See BioLinks under Biotechnology > Applications in Biotechnology > Cloning and Tissue Culture on Biozone's web site for further information on this topic. Monoclonal Antibodies (page 151) 1. 2. Biozone International 2009 Photocopying Prohibited B-lymphocytes. Tumor cells are immortal and, when they fused with B lymphocytes, the resulting hybridomas acquire the Anatomy and Physiology AGAINST • Organ donation can only take place under certain circumstances (e.g. accident and brain death, or death while in intensive care). Donor must be medically and legally dead. • Despite advances, transplant recipients face several (avoidable) risks, including inappropriate selection and testing of donors and inadequate sterilization of some tissues. These increase the risk of infection, e.g. from prions, malignancies, and viruses such as West Nile. There is also the risk that the material for transplantation may be of poor quality (...
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This document was uploaded on 01/28/2014.

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