this study provides no evidence for foreign dna in crown gall tumors , and raises objections to the interpretation of the data of earlier investigators ( quetier , f. , huguet , t. and guille , e. ( 1969 ) biochem , biophys . res , commun . 34 , 128-133 and srivastava , b.i.s . ( 1970 ) life sci . 9 , 889-892 ) who claimed to detect a. tumefaciens dna in crown gall tumors by dna-dna-filter hybridization .
C0012854
dna
C0012930
dna