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Injection of minute amounts of a substance into a microscopic structure, such as a single cell.

mi′cro·in·ject′ (-jĕkt′) v.


vb (tr)
(Microbiology) to inject (a substance, esp a single living cell) using a microscope
References in periodicals archive ?
The phrase "transgenic rescue with wild-type and mutant construct" means that researchers can microinject various plasmids to see whether the sequences can rescue the mutant phenotypes to understand whether some genetic variants retain wild-type function or not.
PALM Robot-CombiSystem combines the cutting ability of the Robot-MicroBeam with the manipulation capabilities of the Robot-MicroTweezers, allowing a user to handle a small object by optical tweezers and simultaneously cut, microsurgically process, or microinject the trapped specimen.
But straightforward microinjection won't work with plant cells, because "it's pretty hard to microinject through a tough cell wall," says Michael Berns, director of the Beckman Institute, who has done extensive research on laser microsurgery.