Salivary gland(SA-lih-VAYR-ee gland) A gland in the mouth that produces saliva.
Schwann cellA type of glial cell of the peripheral nervous system that helps separate and insulate nerve cells.
Side population (SP) stem cellTwo examples of multipotent stem cell populations found in bone marrow and skeletal muscle. SPs are not yet fully characterized.
SignalsInternal and external factors that control changes in cell structure and function.
Single-cell clonedA procedure pertaining to cells in vitro in which the descendants of a single cell are physically isolated from other cells growing in a dish, and then…
Skin biopsyProcess of removing tissue, in this case skin, from living patients for diagnostic examination, or the tissue specimen obtained by that process.
Somatic cell(soh-MA-tik ...) Any of the body cells except the reproductive (germ) cells.
Somatic cell nuclear transferA technique in which the nucleus of a somatic cell (any cell of the body except sperm cells and egg cells) is injected, or transfered, into an egg, that…
Somatic Cell Nuclear Transfer (SCNT)A method of cloning: transfer of the nucleus from a donor somatic cell into an enucleated egg to produce a cloned embryo.
Somatic cellsCells of body tissues other than the germline.
Somatic stem cellsNon-embryonic stem cells that are not derived from gametes (egg or sperm cells).
Stem cellA cell from which other types of cells develop. For example, blood cells develop from blood-forming stem cells.
Stem cell antigen 1 (Sca-1)Cell-surface protein on bone marrow cell, indicative of hematopoietic stem cells and mesenchymal stem cells.
Stem cell factor (SCF)Relatively undifferentiated cell that can continue dividing indefinitely, throwing off daughter cells that can undergo terminal differentiation into…
Stem cellscells that have the ability to divide for indefinite periods in culture and give rise to specialized cells.
StromalRelating to the stroma of an organ or other structure, that is, its framework, usually of connective tissue, rather than its specific substance.
Stromal cell(STROH-mul SEL) A type of cell that makes up certain types of connective tissue (supporting tissue that surrounds other tissues and organs).
Stromal cellsNon-blood cells derived from blood organs, such as bone marrow or fetal liver, which are capable of supporting growth of blood cells in vitro.
SubculturingTransferring cultured cells, with or without dilution, from one culture vessel to another.
Sulfated proteoglycanMolecules found primarily in connective tissues and joint fluids and that provide lubrication.
Surface markerSurface proteins that are unique to certain cell types capable of detection by antibodies or other detection methods.
Surface markersProteins on the outside surface of a cell that are unique to certain cell types, which are visualized using antibodies or other detection methods.
SyncytiotrophoblastA multinucleated cell formed from the cells of the trophoblast. Only a small area of the syncytiotrophoblast is evident at the start of the formation of…
syncytiumA large cell-like structure formed by the joining together of two or more cells. The plural is syncytia.