Additional examples of successful application of macromolecular crystal ann
ealing are presented. A qualitative evaluation of variables related to the
annealing process was conducted using a variety of macromolecular crystals
to determine in which cases parameters may be varied and in which cases the
original macromolecular crystal annealing protocol is preferred. A hypothe
sis is presented relating the solvent content of the crystal to the specifi
c protocol necessary for the successful application of annealing.