Crystallography, X-Ray X ray crystallography 22 chemistry 14 Models, Molecular 8 molecular model 8 Ligands 7 ligand 7 crystal structure 5 crystallography 5 Article 4 Humans 4 X ray diffraction 4 genetics 4 human 4 Palladium 3 chemical structure 3 controlled study 3 metabolism 3 palladium 3 procedures 3 2,2-diphenyl-1-picrylhydrazyl 2 Aldehyde Oxidoreductases 2 Alpine soil 2 Ammonia 2 Anions 2 Biopterin 2 Biphenyl Compounds 2 Crystal structure 2 Crystallization 2 Crystallography 2