Recovery activities must begin within 24 hours of asystole, if donor was cooled within 12 hours from TOD. If body was not cooled within 12 hours, recovery activities ,must begin within 15 hours of death. If body was cooled, then not cooled, total time not cooled must not exceed 15 hours. If body was not cooled at all past 15 hours from TOD, recoveries cannot continue.