What is video-assisted thoracoscopic surgery (VATS)? VATS is a surgical procedure used in the chest and lungs. It is a type of 'keyhole' surgery where only very small cuts (incisions) are made to the body. VATS uses a special instrument called a thoracoscope. VATS uses a special instrument called a thoracoscope.
The cells in G0 phase do not go through mitosis whatsoever. These cells only do what they are initially suppose to do, and do not prepare for a division. Many cells in your body are like this. Brain cells are in G0 phase and do not EVER replace itself. However, many cells may also trigger its phase from G0 phase to G1 phase when more cells are needed. When a liver is critically damaged, the liver cells are triggered back to G1 phase to replenish its lost cells.
Escape From Senescence There are two independent events that frequently occur allowing cells to evade or overcome senescence, mutation of p53 and the activation of telomerase. p53 mutation is one step in the transformation of cells promoting cells to undergo unregulated cell growth. It is also a step in the evasion of senescence in which cells no longer respond to the senescence signals and thus continue to grow. However, telomeres continue to shorten with each cell division past the senescence barrier.