The best and most readily understood example of a stem cell in humans is that of the fertilized egg, or zygote. A zygote is a single cell that is formed by the union of a sperm and ovum. The sperm and the ovum each carry half of the genetic material required to form a new individual.
http://www.medicinenet.com/stem_cells/article.htm
Stem cells are cells with the potential to develop into many different types of cells in the body. They serve as a repair system for the body. There are two main types of stem cells: embryonic stem cells and adult stem cells. Stem cells are different from other cells in the body in three ways: They can divide and renew themselves over a long time.
https://medlineplus.gov/stemcells.html
1 Bone marrow transplantation is an example of a stem cell therapy that is in widespread use.  Research is underway to determine whether stem cell therapy may be useful in treating a wide variety of conditions, including diabetes, heart disease, Parkinson's disease, and spinal cord injury.
http://www.medicinenet.com/stem_cells/article.htm
stem cell n. An unspecialized cell that gives rise to a specific specialized cell, such as a blood cell. stem cell. An unspecialized cell found in fetuses, embryos, and some adult body tissues that has the potential to develop into specialized cells or divide into other stem cells.
http://www.dictionary.com/browse/stem-cell
Stem Cells [Internet]. Salt Lake City (UT): Genetic Science Learning Center; 2014 [cited 2016 Aug 15] Available from http://learn.genetics.utah.edu/content/stemcells/.
http://learn.genetics.utah.edu/content/stemcells/
Stem cell facts. 1  Stem cells are primitive cells that have the potential to differentiate, or develop into, a variety of specific cell types. 2  There are different types of stem cells based upon their origin and ability to differentiate.  Bone marrow transplantation is an example of a stem cell therapy that is in widespread use.
http://www.medicinenet.com/stem_cells/article.htm
1 Stem cells are primitive cells that have the potential to differentiate, or develop into, a variety of specific cell types. 2  There are different types of stem cells based upon their origin and ability to differentiate.  Bone marrow transplantation is an example of a stem cell therapy that is in widespread use.
http://www.medicinenet.com/stem_cells/article.htm
1 Bone marrow transplantation is an example of a stem cell therapy that is in widespread use. 2  Research is underway to determine whether stem cell therapy may be useful in treating a wide variety of conditions, including diabetes, heart disease, Parkinson's disease, and spinal cord injury.  Readers Comments 2.
http://www.medicinenet.com/stem_cells/article.htm
stem cell definition. A cell from which a variety of other cells can develop through the process of cellular differentiation. Stem cells can produce only a certain group of cells (as with skin stem cells) or any cell in the body (as with embryonic stem cells).
http://www.dictionary.com/browse/stem-cell
Stem cells are cells with the potential to develop into many different types of cells in the body. They serve as a repair system for the body. There are two main types of stem cells: embryonic stem cells and adult stem cells. Stem cells are different from other cells in the body in three ways: 1  They can divide and renew themselves over a long time. 2  They are unspecialized, so they cannot do specific functions in the body.  They have the potential to become specialized cells, such as muscle cells, blood cells, and brain cells.
https://medlineplus.gov/stemcells.html
what is cell stem?
Cell stem is a cell from which a variety of other cells can develop through the process of cellular differentiation.