Ser-C14 Leu-C14 LYys-C14 Gly-C14 (c)Resclving the ambiguities @@@ 回▣闷 Labeled Leu tRNA+ Add ribosomes Labeled Ser tRNA+ synthetic trinucleotide synthetic trinucleotide Pour through filter 日iboso0d cuC No radioactivity Radioactivity trapped in filter trapped in filterSer-C14…. Leu-C14 …. Lys-C14 …. Gly-C14 …