Best® Theratronics leads the industry in blood irradiation. Our Gammacell® line is the “Gold Standard” in countless clinics worldwide, and our latest in x-ray irradiation, the Raycell® Mk2, delivers superior performance and uniformity. Now introducing the new Raycell® Mk1 with its own water supply, compact size, and the ability to irradiate a 60 ml syringe.