LAFAYETTE, Colo. & PHILADELPHIA--(BUSINESS WIRE)--April 4, 2006--The Genome-Wide RNAi Global Initiative, an alliance of Dharmacon, Inc. and leading international research centers pioneering the use of whole genome RNAi screening, today announced that Fox Chase Cancer Center of Philadelphia has joined the RNAi Global Initiative. The members of the Genome-wide RNAi Global Initiative are collaborating to advance the productivity of genome-wide RNAi screening -- a fundamental breakthrough in discovery biology.