Example sentences for: pre-exist

How can you use “pre-exist” in a sentence? Here are some example sentences to help you improve your vocabulary:

  • In some cases, such as the regeneration of skin, blood, muscle, and bone in mammals and the replacement of lost tissues in the flatworm planarian, the progenitor cells pre-exist as reserve cells or stem cells that only need to be activated in response to injury or tissue depletion.

  • Subclones bearing this mutation could arise de novo during treatment . However, based upon analogous studies in CML, it is also possible that NSCLC subclones bearing this secondary mutation pre-exist within the primary tumor clone in individual patients, albeit at low frequency [23].


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