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Terms in this set (12)
an undifferentiated cell that will divide and differentiate to become a specialized cell, all 220 cell types in the body "stem" from stem cells
the process in which an undifferentiated stem cell has specific genes activated which allows the cell to be come specialized, one cell type becomes all the others
Totipotent stem cells
these cells can differentiate and become any type of cell in the body and will also give rise to the placenta, they are NOT used in research because they behave unpredictably
Pluripotent stem cells
these cells can differentiate and become most cell types in the body, desired stage in embryonic stem cell research
Multipotent stem cells
these cells can differentiate and become a very limited number of cell types
Where are totipotent stem cells found?
they are found only in very early embryos (from the zygote to the 8 cell stage)
Where are pluripotent stem cells found?
they are found in IVF left-over blastocysts and induced pluripotent stem cells
Where are multipotent stem cells found?
umbilical cord, placenta, and in various locations throughout the body
Adult stem cells
found throughout the human body, multipotent, maintain and repair tissue, been used for decades
example: hematopoietic (blood) stem cell
Umbilical cord stem cells
Made up of multipotent stem cells
Induced pluripotent stem cells (iPSC's)
uses differentiation to turn on somatic cells (normal human body cell other than sperm, egg, or embryo) back into stem cells
stem cell into somatic cell
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