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.
1 The teratomas include cell types derived from all three primary germ layers, demonstrating the pluripotency of human ES cells [ 48 2  ]. Gearhart and colleagues derive human embryonic germ (EG) cells from the gonadal ridge and mesenchyma of 5- to 9-week fetal tissue that resulted from elective abortions. 1989: Pera et al., derive a clonal line of human embryonal carcinoma cells, which yields tissues from all three primary germ layers. 2  The cells are aneuploid (fewer or greater than the normal number of chromosomes in the cell) and their potential to differentiate spontaneously in vitro is typically limited.