The ?Metrology for Gene Expression? program at the National Institute for Standards and Technology in Gaithersburg, MD, is seeking enthusiastic and talented postdoctoral research candidates interested in exploring the basic measurement properties of microarrays and how those properties affect their application. Our work is focused on understanding the performance of microarray gene expression analysis, through the entire measurement process from RNA extraction, sample preparation, labeling, hybridization, detection, and data analysis. We invite interested candidates to apply for Postdoctoral Research Associateships available through the National Research Council (NRC). These positions are targeted at Ph.D. candidates who will graduate in 2005-2006. There are two upcoming application dates, August 1, 2005 and February 1, 2006. Information regarding the application, deadlines, tenure dates, and salary and benefits package is available on the NRC Research Associate Program website ? http://www.national-academies.org/rap These research associateships are two-year appointments with an annual salary of $55,700. These positions are highly competitive and attract outstanding candidates. Typically, 40-50 of these associateships are awarded each year at NIST. Our multidisciplinary team (biologists, chemists, chemometricians and statisticians) is addressing the reliability, validity, uncertainty, comparability, dynamic range, selectivity/specificity, and linearity of microarray results. All aspects of the molecular biology, chemistry, physics, and informatics of microarray measurements are fair game for study. We invite inquiry from applicants who are interested in any facet of this program. These postdoc appointments are excellent opportunities for recent Ph.D. graduates who are seeking additional experience prior to accepting a permanent academic or industrial position. Historically, a number of these awardees have also become permanent employees at NIST. Please feel free to contact any of the advisors listed below. Best regards, Marc Salit Advisor Information: Salit, Marc L. (301) 975-3646 salit at nist.gov Duewer, David Lee (301) 975-3935 david.duewer at nist.gov Wang, Lili (301) 975-2447 lili.wang at nist.gov