00401nam a2200109Ia 4500008004100000040001100041100001500052245012200067260007800189300001400267300001000281251112s9999||||xx |||||||||||||| ||und||  aCNCLSA  aD. Clayson 0aCancer LettersbAn International Journal Providing a Forum For Orginal and Pertinent Contributions in cancer Research  c1987bThe American Association for the Advancement of ScienceaWashington  aP. 1-1024  bV. 44