An apparatus for the controlled generation of ultraviolet rays for a focused micro stimulation of cell structures. The apparatus comprises an ultraviolet ray beam generator, at a frequencies comprised between 200 and 400 nm; means for focusing a ray beam on a selected surface area of the cell structure,...http://www.google.com/patents/US6645231?utm_source=gb-gplus-sharePatent US6645231 - Apparatus for the controlled generation of ultraviolet rays for focused micro stimulation of cells
