An injection syringe for the injection of materials into domestic animals is provided. The syringe includes a tubular body having a guide member positioned within the body that is adapted to engage and properly position fluid containing straws of varying diameters with respect to the syringe. A plunger...http://www.google.es/patents/US7241261?utm_source=gb-gplus-sharePatente US7241261 - Dual use syringe