the comparison between mean structural chromosomal aberration rates after immunosuppressive therapy and the rate of induction of malignant tumours after application of the same cytostatic substances to animals revealed a far-reaching parallelism : highest mean aberration rates after therapy with procarbazine ( natulan ) and cyclophosphamide ( endoxan ) - fewer aberrations after mannitol mustard ( degranol ) and no definite induction of chromosomal aberrations after azathioprine ( imurel ) ( 8 ) .
C0024738
mannitol
C0878330
degranol