Multiple ribonuclease H-encoding genes in the Caenorhabditis elegans genome contrasts with the two typical ribonuclease H-encoding genes in the human genome.
Arudchandran A, Cerritelli SM, Bowen NJ, Chen X, Krause MW, Crouch RJ. Multiple ribonuclease H-encoding genes in the Caenorhabditis elegans genome contrasts with the two typical ribonuclease H-encoding genes in the human genome. Mol Biol Evol. 2002 Nov; 19(11):1910-9.