And many companies began to crumble:
While gene silencing was simple in worms, mammals proved to be far more complex — and safe drug delivery emerged as a major problem.
Not exact matches
However, for a few
genes, only one allele is expressed,
while the other one is
silenced.
The copy of this
gene derived from the father is normally expressed,
while the copy from the mother is
silenced, or «imprinted», by DNA methylation.
While all cell types share the same genetic code (DNA), certain
genes are specifically «expressed» or «
silenced» in each cell type.
While 145 of the
silenced genes were essential for regeneration and homeostasis (normal tissue loss and replacement), other
genes were required for one or the other but not both.