Nextdoor is the private social network for your neighborhood. On Nextdoor, neighbors create private groups for their neighborhoods where they can ask questions, get to know one another, and exchange local advice and recommendations.
Up-regulation is a process that occurs within a cell triggered by a signal (originating internal or external to the cell), which results in increased expression of one or more genes and as a result the protein(s) encoded by those genes.
The protein p27 is a master regulator of organized cell division and growth found in the nucleus of cells, and it is commonly inactivated in cancer cells. Telomeres sit on the end of our chromosomes -- the strands of DNA stored in the nucleus of cells.