in order to acquire a fundamental knowledge for the development of better tumor-scanning agents , the in vivo incorporation pattern of three 14c-labeled d-amino acids , alanine , leucine , and tryptophan , into the tumor cells and organs of animals bearing ehrlich mouse tumor , sarcoma-180 , leukemia l-1210 , or yoshida sarcoma was investigated , and compared with that of the corresponding l-forms .
C0002520
amino acids
C0001898
alanine