surcease. 1. To prevent the occurrence or continuation of a movement, action, or operation: arrest, belay, cease, check, discontinue, halt, stall, stay, stop. Idioms: bring to a standstill, call a halt to, put a stop to.
Embryonic stem cell. Also called ES cells, embryonic stem cells are cells derived from the inner cell mass of developing blastocysts. An ES cell is self-renewing (can replicate itself), pluripotent (can form all cell types found in the body) and theoretically is immortal.tem cells that can give rise to all cell types that are found in an embryo, fetus, or developed organism, including the embryonic components of the trophoblast and placenta required to support development and birth.
Though some experiments have shown that adult stem cells can be useful, the most promising results come from embryonic stem cells derived from a 5-7 day embryo and embryonic germ cells, derived from aborted fetuses. Each of the sources of stem cells poses its own ethical questions.dult tissues also contian stem cells, ulike that of the embryonic stem cells and embryonic germ cells these are generally multipotent and only develop into cells of a specific tissue or organ type. These cells are in many types of adult tissues to replenish cells that wear out.