Participants will receive infusions of PROCHYMAL on Day 42, Day 84, and Day 126 after initial infusion of PROCHYMAL in Protocol 603. Each infusion will contain 200 million cells. As participants will be required to be in Protocol 603 during the entire duration of their participation in Protocol 611, all concomitant medication and safety information will be monitored by Protocol 603 and the combination of data from the two protocols.
