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contact inhibition
noun
- the cessation of movement, growth, and division in cells that touch each other.
Word History and Origins
Origin of contact inhibition1
Example Sentences
In a 2009 study1, they noted that a process in natural anticancer defences called contact inhibition, which prevents cells from dividing when they reach a certain density, occurs at a much lower cell density in naked mole rats.
Cancer starts when mutated cells grow uncontrollably; by increasing contact inhibition, hyaluronic acid, which Gorbunova describes as “basically a gooey sugar,” probably keeps these tumor cells from replicating.
The mechanism may involve contact inhibition, the tendency of cells to stop dividing when squeezed tightly by other cells.
However, the contact inhibition they do show is not normal: instead of filling a culture dish and then holding steady, blind-mole-rat cells undergo mass cell death when they reach high densities7.
This property, called contact inhibition, is absent in cancer cells.
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