evidence in this regard included the inability of estrogen treatment of alter significantly the ( a ) resulting patterns of methyl-14c-methylated constituents of uterine trna , ( b ) the extent ot which [ 2-14c ] guanine residues , incorporated into trna , become methylated , ( c ) the extent of methylation of precursor trna in the absence of trna synthesis , and ( d ) the types of methylase activities expressed in vitro .
C0035668
trna
C0035711
trna