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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.
the injection of tiny amounts of a substance into a cell by using micromanipulation instruments.
microinjectionA method of introducing DNA into a cell by direct injection into the nucleus, using a microcapillary pipette.
microinjectiona method for introducing new DNA into a CELL by injecting it directly into the NUCLEUS or CYTOPLASM using a thin glass needle. The technique has been used to inject cloned genes into the nucleus of an egg cell in vitro, to generate a TRANSGENIC ORGANISM.
a method in which very finely drawn glass pipettes held in a finely adjustable mechanical device are used to introduce new materials (antibodies, organelles, DNA) into cells as they are visualized under a microscope.