A syringe plunger rod system is provided. The system shall include at least one inoculator and a related rod to transmit force to the ram. The rod includes an end with a member that carries a thread,and the bearing member includes a certain geometry which allows easy installation of the rod within the inoculator; andResistance to output traction forces shall be provided as may be transmitted when the rod or vaccine is drawn or exported from a water chamber.
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