RNA. 2005 Oct;11(10):1555-62. doi:10.1261/rna.2121705

Levy M, Griswold KE, Ellington AD.

Direct selection of trans-acting ligase ribozymes by in vitro compartmentalization.

During immunolabelling, biotinylated nucleic acids can diffuse from bead to bead if no blocking of biotin is added.