In vitro (Latin: "within glass") is an experimental technique where the experiment is performed in a test tube, or generally outside a living organism. An example is in vitro fertilization. Alternatives of in vitro include in vivo and in silico: within an organism, and computational, respectively. Many experiments that deal with molecular biology are conducted outside organisms or cells, where the conditions and therefore results may not represent those inside the cell. This is why results are often annotated with in vivo, in vitro, or in silico, as applies.

See also

• animal testing
• ex vivo
• in silico
• in situ
• in utero
• in vivo
• InVitro

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Latin biological phrases