polyamine levels ( expressed as nanomoles per 100 mg tumour ) in cancers ranged from 0.8 to 7.9 for putrescine ( mean : 2.3 +/- 0.7 ) , from 6.5 to 22.8 for spermidine ( mean : 13.9 +/- 0.9 ) and from 13.0 to 37.5 for spermine ( mean : 22.1 +/- 1.3 ) .
C0027651
tumour
C0006826
cancers