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In situ

/ˌin ˈsīto͞o/  /ˈsē-/ Adjective 1. In its original position or place. (wiktionary.org) 2. In the natural or normal place, confined to the site of origin without invasion of neighboring tissues. In the original or natural place or site; carcinoma in situ.(biology-online.org) 3. Being in the original position; not having been moved. (biology-online.org) Adverb 1. In the original or natural place or site. (wordnetweb.princeton.edu) Word origin: Latin, literally “in its (original) place or...

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In vitro

/in ˈvēˌtrō/ Adjective 1. In an artificial environment outside the living organism.(wiktionary.org) 2. Of a biological process occurring in an artificial environment outside the living organism. (wordnetweb.princeton.edu) Adverb 1. In an artificial environment outside the living organism. (wordnetweb.princeton.edu) Syn: ex vivo Word origin: Latin; “in a test tube, culture dish, etc.;” literally “in...

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In vivo

/in ˈvēvō/ Adjective or Adverb 1. Experimentation using a whole, living organism as opposed to a partial or dead organism, or an in vitro (“within the glass”, i.e., in a test tube or petri dish) controlled environment. (wikipedia.org) 2. Within a living organism. (wiktionary.org) 3. Of a biological process occurring within a living organism. (wordnetweb.princeton.edu) 4. In the living body of a plant or animal. (merriam-webster.com) Word origin: Latin; “within a living...

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