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what is the umbilical cord
magkadikit
最后更新： 2019-01-19
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embryonic stem cells are sourced from the blastocyst of an embryo. somatic (tissue-specific) stem cells are sourced from specialised tissue such as skin, bone marrow or umbilical cord blood. (note: stem cells are present in most tissues of the body as they are essential cells for everyday growth and repair. adult stem cells are not sourced just from adults. although commonly used, this term is misleading as adult stem cells are actually found in specialised tissues of any human who has specialised tissue types, including fetuses, babies and small children.)
refrace
最后更新： 2016-10-24
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