The stages of research: T0: Background time (1st clinical 7 diagnosis of brain death); T1: After 12 hours: 3rd brain dead diagnose brain death 3 times (determined - conclusions); T2: After 24 hours of resuscitation of brain death (organ resuscitation); T3: After 36 hours of diagnosis and resuscitation of brain death; T4: After 48 hours of diagnosis and resuscitation of brain; Tm: Time before harvesting organs.