(a) Brightfield image of the precipitates at 25 minutes after mixing S, H, and L at 10, 40, and 150 μM, respectively. (b) Enlarged view of a region inside the precipitates, visualized by fluorescence of Alexa 594-SH35 (red), FITC-heparin (green), and Cy5-lysozyme (magenta). The last panel shows the merge of the green and magenta channels. (c) ThT binding (yellow) to S:H:L precipitates formed from S:H:L = 10:40:150 μM and labeled with FITC-heparin and Cy5-lysozyme, imaged at 5 min after mixing. The last panel shows the merge of the green and magenta channels.