单词 | stem cell |
释义 | stem cellnoun Cell Biology.a cell that upon division replaces its own numbers and also gives rise to cells that differentiate further into one or more specialized types, as various B cells and T cells. Origin of stem cellFirst recorded in 1880–85 Words nearby stem cellStellwag's sign, St. Elmo's fire, stem, stem-and-leaf diagram, stem canker, stem cell, stem cell factor, stem cell leukemia, stem Christie, stem duchy, stem-end rot Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for stem cellBritish Dictionary definitions for stem cellstem cell nounhistology an undifferentiated cell that gives rise to specialized cells, such as blood cells Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Cultural definitions for stem cellstem cell A cell from which a variety of other cells can develop through the process of cellular differentiation. Stem cells can produce only a certain group of cells (as with skin stem cells) or any cell in the body (as with embryonic stem cells). notes for stem cellA major controversy involves the question of whether nonembryonic stem cells should be used for medical purposes. The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. Medical definitions for stem cellstem cell n.An unspecialized cell that gives rise to a specific specialized cell, such as a blood cell. The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company. Scientific definitions for stem cellstem cell An unspecialized cell found in fetuses, embryos, and some adult body tissues that has the potential to develop into specialized cells or divide into other stem cells. Stem cells from fetuses or embryos can develop into any type of differentiated cells, while those found in mature tissues develop only into specific cells. Stem cells can potentially be used to replace tissue damaged or destroyed by disease or injury, but the use of embryonic stem cells for this purpose is controversial. Also called progenitor cell The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. |
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