In cytology, a precursor cell, also called a blast cell or simply blast, is a type of partially differentiated, usually unipotent cell that has lost most or all of the stem cell multipotency. Usually a precursor cell is a stem cell which has the capacity to differentiate into only one cell types. Sometimes precursor cell is used as an alternative ...
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http://en.wikipedia.org/wiki/Precursor_cell
(from the article `blood cell formation`) ...red and white blood cells arise through a series of complex, gradual, and successive transformations from primitive stem cells, which have the ... Both the red and white cells arise through a series of complex transformations from primitive stem cells, which have the ability to form any of th...
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http://www.britannica.com/eb/a-z/p/107
Type: Term Definitions: 1. a population of cells in the bone marrow that are incapable of self-renewal; they are derived from progenitor cells and are the first cells of a particular blood cell line that can be recognized due to their specific morphologic characteristics (e.g., proerythroblast).
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http://www.medilexicon.com/medicaldictionary.php?t=15821
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