Opossum carboxylesterases: sequences, phylogeny and evidence for CES gene duplication events predating the marsupial-eutherian common ancestor.
Holmes RS, Chan J, Cox LA, Murphy WJ, VandeBerg JL. Opossum carboxylesterases: sequences, phylogeny and evidence for CES gene duplication events predating the marsupial-eutherian common ancestor. BMC Evol Biol. 2008 Feb 20; 8:54.