A method in order to achieve an expression, or to improve the expression of a gene

摘要

Syringe of the type comprising a cylinder 1 in which is displaced a piston 2 provided with a tight end-piece 3 defines two chambers in said cylinder, in that of the perforating means 44 are arranged on at least one of the constituents of the syringe in order to destroy the seal of the end-piece 3 during the displacement of the piston 2 in the direction of the bottom 13 of the cylinder.