An apparatus of the invention is for injecting a solution into a cell. The
apparatus includes a nozzle that jets a solution to a cell, and a laser
irradiating unit that irradiates a laser to the cell to form an opening
through which the solution jet from the nozzle is introduced into the
cell. The nozzle jets the solution toward a nucleus of the cell, and the
laser forms the opening in the cell at a point in a cell membrane of the
cell such that the solution can be applied on the nucleus.