Movie S9.

Long left-handed rods wet the raft edge when dextran concentration increases. Fluorescence imaging of rafts at first 40 mg/ml, then 40.5 mg/ml dextran concentration with long, left-handed rods fluorescently labeled shows that at 40 mg/ml long rod concentration is roughly constant around the raft edge while at 40.5 mg/ml the labeled long, left-handed rods accumulate around the raft perimeter. Scale bar is 2 μm.