VENLO, The Netherlands / SAN DIEGO, CA, July 20, 2007 - QIAGEN N.V., the leading provider of sample and assay technologies for research in life sciences, molecular diagnostics and applied testing, today announced that it has entered a strategic agreement with the Joint Center for Structural Genomics (JCSG), one of the 4 PSI Structural Genomics Production Centers, providing protein crystallographers with a new set of proven crystallization screens that have been assembled from analysis of hundreds of thousands of crystallization experiments.