Figure 4: Typical biocrystallograms of watery extract of cress seedlings (310 mg extract 10% (w/v)/150 mg CuCl2/6.1 mL volume) for a crystallisation time of (a) 15 h and (b) 24 h. Prolonged crystallisation as in case (b) led to crystals growing from the periphery to the centre. ROI: circular regions of interest, defined by radius segments 0–50%, 50–70%, 70–90%, and 90–100%.