We claim the ornamental design for a syringe, as shown and described.
FIG. 1 is a top front perspective view of a syringe according to the claimed design;
FIG. 2 is a bottom front perspective view thereof;
FIG. 3 is a left rear perspective view thereof;
FIG. 4 is right rear perspective view thereof;
FIG. 5 is a front view thereof
FIG. 6 is a rear view thereof;
FIG. 7 is a top perspective view of a portion of the syringe of FIG. 1;
FIG. 8 is a bottom perspective view thereof;
FIG. 9 is a front view thereof;
FIG. 10 is a left side view thereof;
FIG. 11 is a top view thereof; and,
FIG. 12 is a bottom view thereof.
The broken lines in the drawings illustrate portions of the syringe and 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.