So AP, Turner RF, Haynes CA.

Nucleic Acids Res. 2004 Jul 6;32(12):e96. doi:10.1093/nar/gnh082

Increasing the efficiency of SAGE adaptor ligation by directed ligation chemistry.

Ligation of cDNA and methylated oligos, in presence of methy-sensitive restriction enzymes, eliminates the cDNA dimer product du to mass action.