Particle bombardment is known as gene gun technology. The system quickly launches DNA-wrapped gold powder or tungsten particles into target plant cells or tissues with the assistance of high-pressure helium. As the particles enter plant cells, the transgenes are released from the surface of particles and then are incorporated into the chromosomal DNA. Particle bombardment is mainly used for the generation of transgenic plants and research around the function of target genes at present. Moreover, this system also holds the promise of becoming a universal gene delivery system and a means to introduce drugs and other biologically important substances into cells.
