I've been doing undergraduate rat research now for two years (junior and senior years). I've been on a team with three other fellow students, and we have worked with Trypanosoma lewisi, and protozoan blood parasite that is a relative of the parasites that cause African sleeping sickness. Our goal has been to try and find a cheap, non-toxic, readily available treatment, and thus far we have tried arabinogalactin, ellagic acid, and dihydroartemisinin.
My senior year I also was involved in a sports medicine research study in which we were studying the effects of retro walking on cardiovascular fitness.