FIG. 1 is a perspective view of a front, top, and right side of an ornamental design for a syringe according to our new design;
FIG. 2 is a front side elevational view thereof;
FIG. 3 is a left side elevational view thereof;
FIG. 4 is a rear side elevational view thereof;
FIG. 5 is a right side elevational view thereof;
FIG. 6 is a top plan view thereof; and,
FIG. 7 is a bottom plan view thereof.
The dashed broken lines are included for the purpose of illustrating portions of the syringe that form no part of the claimed design. The break lines indicate that the appearance of any portion of the syringe between the break lines forms no part of the claimed design.