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Monomer overlays for the crystallographically unique monomers in each set of crystals. (a) Acetaminophen: forms I (red), II (blue), IIIa (green), and IIIb (purple). (b) Phenobarbital: forms IIa (red), IIb (blue), IIc (green), and III (purple). (c) Testosterone: αu (red), αv (blue), and β (green).
