Hu, Lihai Trace element concentrations in horn: Endogenous levels in keratin and susceptibility to exogenous contamination. [electronic resource] - Chemosphere Dec 2019 - 124443 p. digital Publication Type: Journal Article ISSN: 1879-1298 Standard No.: 10.1016/j.chemosphere.2019.124443 doi Subjects--Topical Terms: AnimalsAnimals, DomesticAnimals, WildCattleCytoskeletal ProteinsCytoskeletonEnvironmental Monitoring--methodsEnvironmental Pollutants--analysisFeathers--chemistryGoatsHair--chemistryHorns--chemistryKeratins--chemistryTrace Elements--analysis