A needleless syringe that provides the necessary high pressure, is easily generated despite the utilization of relatively thin-walled glass ampules for storing an injectable medicine. The light guide expands the perceived light source and can redirect the light toward viewing locations. The polysaccharide-based extract can be used in an orally active medicinal product which has immunopotentiating and antitumoral effects. The selected symbol transmission rate and the selected modulation together represent a selectable data rate from a selection of data rates.