Microinjectors
Encyclopedia
A microinjector is a device which provides the pressure which is needed to deliver a sample solution from a micropipette
Pipette
A pipette is a laboratory tool used to transport a measured volume of liquid.-Use and variations:Pipettes are commonly used in molecular biology, analytical chemistry as well as medical tests...

 into cells.

It can be a mechanically or electronically regulated air pressure device or a simple glass syringe
Syringe
A syringe is a simple pump consisting of a plunger that fits tightly in a tube. The plunger can be pulled and pushed along inside a cylindrical tube , allowing the syringe to take in and expel a liquid or gas through an orifice at the open end of the tube...

where the plunger is screw controlled for precise adjustments of the pressure and using air or oil filled connection tubing.
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