Developed using a test tube or Petri dish, eg (2,5)

I believe the answer is:

in vitro

(Other definitions for in vitro that I've seen before include "Made to occur outside body (of biological process)" , "Taking place in a test tube (Latin)" , "By test tube; under glass" , "In an artificial environment outside the living organism (Latin)" , "- - fertilisation (IVF)" .)

I've seen this clue in The Times.

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