in vivo

[in vee-voh]

adverb

1. (of a biological process) occurring or made to occur within a living organism or natural setting.

in vivo

/ ɪn ˈviːvəʊ /

adverb

1. (of biological processes or experiments) occurring or carried out in the living organism

in vivo

1. Inside a living organism.

2. Compare in vitro

in vivo

1. In nature; literally, “in life.” In vivo conditions are distinguished from those that might exist only in a laboratory. (Compare in vitro.)

Word History and Origins

Origin of in vivo¹

First recorded in 1900–05; from Latin in vīvō “in (something) alive”

Word History and Origins

Origin of in vivo¹

New Latin, literally: in a living (thing)

Example Sentences

The new study uses in vivo experiments with mice infected with influenza viruses to shed light on how fever provides protection and why this protection may not be enough against avian strains.

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"It was an in vitro and in vivo project, both providing the same outcome," Norris says.

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"Being able to measure these tiny vascular pulses in vivo is a critical step forward," said Arthur W. Toga, PhD, director of the Stevens INI.

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In preclinical in vivo studies, the material showed remarkable results: it fully repaired bone defects within 3-6 months and even triggered the formation of a new layer of strong, healthy cortical bone in 4 weeks.

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A particularly notable finding, according to the researchers, was that effects of the interaction of Rab7a and TPC2 could be demonstrated in vivo.

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