LOS ANGELES--(BUSINESS WIRE)--June 20, 2006--CytRx Corporation (Nasdaq:CYTR - News), a biopharmaceutical company engaged in the development and commercialization of human therapeutics, today announced that it is scheduled to join the Russell Microcap(TM) Index when the Russell Investment Group reconstitutes its family of U.S. indexes on June 30th, 2006, according to a preliminary membership list posted on Friday, June 16th, 2006 on www.russell.com.