optical density as well as radioactivity profiles for both [ 14c ] 4s rna ( from tectal cells ) and [ 3h ] 4s rna ( 90 % of which originated from regenerating optic axons ) were found to be similar to e. coli transfer rna optical density profiles , indicating that the intra-axonal 4s rna is likely to be transfer rna .
C0035668
rna
C0035711
transfer rna