Definition of in vivo in English:

in vivo

Syllabification: in vi·vo
Pronunciation: /in ˈvēvō
 
/

adverb & adjective

Biology
  • (Of processes) taking place in a living organism. The opposite of in vitro.
    More example sentences
    • Resin plates were contaminated in vivo upon intraoral use by 10 volunteers for 7 nights.
    • An in vivo human bronchial xenograft model system was used to simultaneously analyze electrolyte and fluid transport defects in fully differentiated human cystic fibrosis (CF) and non-CF proximal airways.

Origin

Latin, 'in a living thing'.

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