I am taking an immunology course and our professor is offering extra credit to anyone who constructs a 3D model of an IgG molecule. I have searched online and cannot find anything but computer models or websites offering to sell me one for more money than I have, or care to spend for the extra credit. Can anyone suggest what materials I might use and how I might do this or offer a website recommendation that I might be able to use to build my model? Thanks in advance!