It's almost as if these older cells lose the ability to store, or park, these aggregates.
Winds carry off the older cells while new cells pop up to replace them.
Unlike other continuously growing structures, though, the lens cannot shed its older cells, or blindness would result.
The negative gravitaxis of older cells is converted into a positive one by stress factors such as increasing salinity or exposure to excessive visible or UV radiation.
Additionally, we provide a strategy to further enhance synthesis by older cells through the application of conditioned media.
Under normal circumstances, the body continuously renews its skin surface, building new skin cells and allowing older cells to be shed from the surface.
In the sweat gland cells of mice, they watched as new lipids formed in cells at the outer edges of the sweat glands, pushing older cells inward.
He has found that in the nucleolus of older cells, some of the cell's genetic material, a circular piece of ribosomal DNA, pinches off from a chromosome.
Until now, the finding of shorter telomeres in older cells has been a correlation, not a proof of cause and effect.
In older cells that have been through many cycles of division, the telomeres may be worn away to such an extent that the cell stops dividing and becomes "senescent", or even undergoes apoptosis or "cell suicide".
Collagen phagocytosis inhibition effects were significantly greater for PDL57 IMR-90 cells versus PDL48 cells, reflecting a reduced number of collagen processing pathways available to the older cells.
