Dr. B.R. Walker is a Professor in the Vascular Physiology Group at the University of New Mexico. Living Systems Instrumentation vessel chambers were utilized in a recent research article titled “Antioxidant and Vasodilatory Effects of Heme Oxygenase on Mesenteric Vasoreactivity Following Chronic Hypoxia” that was published in the February 2009 issue of the journal Microcirculation. A figure of isolated blood vessels taken from that article was featured on the cover of the April 2009 and May 2009 issues of this journal. Congratulations to the Walker Lab on a nice article and cover!