Areyou looking for skeletons and anatomical models? if so, check out www.3dcafe.com. they have a number of files you can download. if they are not in the correct format for proE, there is a fully functional free converter you can download from downloads.com. it lets you save conversions as stl, iges and vrml.
I'm attempting to model a 50th percentile human male thoracic skeleton for my final year mechanical engineering project. Is there anywhere I can get a .mat file for bone or cartlage?