Are Different Protein Crystal Modifications Polymorphs? A Discussion

Defining terminology and nomenclature in such a manner that important features and properties of a system or phenomena for which a description is sought are succinctly captured is a task fraught with difficulty, in particular when dealing either with complex or subtle issues. The recent exchanges in the literature regarding the terminology applied to co‐crystals and solvates (pseudopolymorphs) is a case in point. The result of these discussions...