title: When is a filly not a filly?
authors.forename: D P
authors.initials: DP
authors.lastname: Leadon
mesh_terms: D000818:Animals; D002678:Chimera / Q000235:genetics*; D012734:Disorders of Sex Development / Q000662:veterinary*; D005260:Female; D006734:Horse Diseases; D006736:Horses