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.
Stem cells are categorized by their potential to differentiate into other types of cells. Embryonic stem cells are the most potent since they must become every type of cell in the body. The full classification includes: 1  Totipotent-the ability to differentiate into all possible cell types.2  Examples are the zygote formed at egg fertilization and the first few cells that result from the division of the zygote.tem cells are a class of undifferentiated cells that are able to differentiate into specialized cell types. Commonly, stem cells come from two main sources: 1  Embryos formed during the blastocyst phase of embryological development (embryonic stem cells) and. 2  Adult tissue (adult stem cells).