A flash curing system for solid freeform fabrication which generates a plurality of radiation emitting pulses that forms a planar flash. The anode includes: a support surface supporting the LED chip; and an extending part extending with respect to the support surface, and the extending parts in the plurality of LEDs separate from each other. The ligand specific to the FEX-2 polypeptide can bind to FEX-2 expressed on the surface of phagocytes so that it can stimulate the secretion of anti-inflammatory cytokine and inhibit the secretion of inflammatory cytokine, so as to treat or prevent inflammatory diseases. The reverse gate is deployed when the brake pedal is moved from a first position to a second position and the throttle is opened as the brake pedal is moved from the second position to a third position.