At the Cellular Level

No, not the wireless service! I remember seeing these animations a little while back and just happened across them again while looking through my bookmarks. The company that makes them, xvivo, makes such cool stuff that I find myself entranced while listening to phrases like: "secreted chemokines bound to something something proteogylcan are presented to lupicite transmembrane receptors" The musical version is interesting as well...
The full version can be seen here.