Assertion: arsenic's compound | /r/AtLocation | protein crystals
Facets:
value: in an effort
type: TEMPORAL
Source sentences:
text: Mercuric compounds such as mercury(II) chloride or potassium tetraiodomercurate(II) can be added to protein crystals in an effort to create heavy atom derivatives that can be used to solve the phase problem in X-ray crystallography via isomorphous replacement or anomalous scattering methods.