Cancer Stem Cell
that are required for the upkeep of high cell turnover tissues where cells consistently should be supplanted. undifferentiated organisms, like all immature microorganisms, are unspecialised (i.e. they have no tissue-particular structures), they can separate and restore themselves for extensive stretches and they can offer ascent to specific cells. They can subsequently summarize heterogeneity as they can be found in .
1. Embryonic stem cells
2. Somatic stem cells
3. Induced pluripotent stem cells