A new class of imidazolines as 4-position acids or esters with very potent anti-inflammatory as well as antimicrobial activity is described. Said sources are focused by the same optical system fixed relative to the plurality of sources. The second contacting portion is supported by a second spring portion and faced to the first contacting portion in the first direction to be brought into contact with the first contacting portion with the second spring portion being bent. The frame structure is configured to be positioned on the fixed rails of the railroad track. A Luer device, for example, may be inserted into the intravenous catheter adapter to translate the blood control valve to a position substantially corresponding to the compression feature, thereby actuating the compression feature to open the slit. Other processing circuitry in the IPG allows electrode impedance measurements to be made.