Revalor-XS is the first delayed-release combination implant for steers fed in confinement that combines in a single implant the performance of trenbolone acetate and estradiol as an intial dose of Revalor-IS and a terminal dose of Revalor-S. Revalor-XS eliminates the need for re-implanting because of its delayed release technology. The first dose goes to work immediately after implanting, just like Revalor-IS. The second dose, which is shielded by the X7 polymer coating, goes to work 70 to 80 days later to deliver the performance of a Revalor-S terminal implant. Each implant contains 10 pellets—four uncoated and six X7 polymer coated pellets. This supports weight gain and feed efficiency for up to 200 days. Contact Intervet/Schering-Plough Animal Health at (800) 441-8272 or visit the Web site www.intervetusa.com.