Insulin delays hIAPP LLPS. A drop of a 129 µM hIAPP-12.89 µM bIAPP-1.28 µM avidin-TR-100 µM ThS reaction in PBS and 42.3 µM insulin was placed on a MatTek dish and imaged. The AWI (outer edge of the reaction drop) is on the left-hand side of the video. The arrowheads indicate droplets that will undergo fusion with one another.