title: Evolution: How the unicorn got its horn.
authors.forename: Heather
authors.initials: H
authors.lastname: Hendrickson
authors.forename: Paul B
authors.initials: PB
authors.lastname: Rainey
mesh_terms: D019343:Citric Acid / Q000378:metabolism*; D004926:Escherichia coli / Q000235:genetics* / Q000378:metabolism*; D019143:Evolution, Molecular; D016680:Genome, Bacterial / Q000235:genetics*; D023281:Genomics
chemical_list: D019343:Citric Acid