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Contact inhibition describes the way normal cells

  • A.divide faster when crowded closely together
  • B.adhere permanently to any surface they touch
  • C.migrate away from other cells of the same type
  • D.stop dividing when they touch their neighbours

Answer: D

A single layer forms and then growth ceases, whereas cancer cells continue and pile up. Loss of the response is one of the changes seen when cells are transformed. Cancer cells grow over one another and form disorganised heaps in culture.

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