Embryonic stem cells have been very controversial because they require the use and destruction of fertilized embryos. Adult stem cells overcome this issue. Adult stem cells are cells in an adult organism which are terminally differentiated. consist only of cytoplasm which can be used as a donor for synthetic DNA. highly controversial because of the potential to contribute to human cloning. larger stem cells that can be isolated from adults and have a greater potential for differentiation. derived from a small subpopulation of specialized stem cells present within some adult organs and capable of self renewal and limited capacity to differentiate.
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The use of embryonic stem cells has been proposed for replacing cells that are destroyed by disease or injury. Because of ethical concerns about creating and destroying embryos to produce embryonic stem cells, researchers have attempted to create induced pluripotent stem cells (iPSCs). In this chapter, we discussed studies showing that iPSCs retain some epigenetic marks from the differentiated adult cells from which they were derived. What implications might this research have for attempts to use iPSCs to regrow cells and tissues?
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The use of embryonic stem cells has been proposed for replacing cells that are destroyed by disease or injury. Because of ethical concerns about creating and destroying embryos to produce embryonic stem cells, researchers have attempted to create induced pluripotent cells (iPSCs). In this chapter we discussed studies showing that iPSCs retain some epigenetic marks of the differentiated adult cells from which they were derived. What implications might this research have for attempts to use iPSCs to regrow cells and tissue?
Which of the following is a valid difference between embryonic stem cells and the stem cells found in adult tissues? a. In laboratory culture, only adult stem cells are immortal. b. In nature, only embryonic stem cells give rise to all the different types of cells in the organism. c. Only adult stem cells can differentiate in culture. d. Embryonic stem cells are generally more difficult to grow in culture than adult stem cells.
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