Nucleic Acids Res. 1991 Oct 11;19(19):5227-32

Edwards JB, Delort J, Mallet J.

Oligodeoxyribonucleotide ligation to single-stranded cDNAs: a new tool for cloning 5' ends of mRNAs and for constructing cDNA libraries by in vitro amplification.

T4 RNA ligase to graft DNA linkers at the end of cDNAs.