Ultimately their genetics. However various genes get turned off at programmed times by methylation of the DNA while others get turned on at programmed times by demethylation of the DNA. The methylated/demethylated forms of the DNA are passed on to the stem cell's descendants so they "retain their programmed state" and thus their identity following differentiation. Some of this program control is influenced by the concentrations of various chemicals secreted by other cells in the vicinity of the stem cell or its descendants.
The different stem cells are controlled by cellular behavior. It is known to support cellular attachment and human embryonic stem cells
blood cells
Sometimes the bird is able to develop a new migratory pattern, but often the bird will become confused, lost and die as a result. Stem cells are biological cells found in all multicellular organisms, that can divide (through mitosis) and differentiate into diverse specialized cell types and can self-renew to produce more stem cells. www.stem-cell-regeneration.com/about
stem cells can differentiate into nerve or muscle cells
They were at one point, but as they grow they differentiate and can no longer be counted as stem cells.
they can differentiate into more cells than adult stem cells can.
blood cells
Sometimes the bird is able to develop a new migratory pattern, but often the bird will become confused, lost and die as a result. Stem cells are biological cells found in all multicellular organisms, that can divide (through mitosis) and differentiate into diverse specialized cell types and can self-renew to produce more stem cells. www.stem-cell-regeneration.com/about
stem cells can differentiate into nerve or muscle cells
They were at one point, but as they grow they differentiate and can no longer be counted as stem cells.
embryonic stem cells can differentiate into more types of cells
They can differentiate into more cells than adult stem cells can.
they can differentiate into more cells than adult stem cells can.
Yes, stem cells are unspecialized cells that have the potential to develop into different types of specialized cells in the body. They can divide and replicate to produce more stem cells, or they can differentiate into specific cell types depending on the signals they receive from their environment.
embryonic stem cells can differentiate into more types of cells
Stem cells are cells that are able to divide continuously without specializing. These kind of cells are undifferentiated biological cells.
they can differentiate into more cells that adult stem cells can
Totipotent