It is an application for the medical fraternity or anyone who is interested in learning about the human anatomy. It lets you view and search 3D models of the human anatomy. It has been designed very much on the lines of the other Google applications like Google Earth etc. where you can navigate through different parts of the world. With Google Body Browser you can browse through the human body in a similar manner. Earlier browser versions required you to enable WebGL to run Google Body Browser, however, all recent browsers have this feature enabled by default, so no tweaking around is required.
You can access the application here: http://bodybrowser.googlelabs.com/. This is a very cool application where you can rotate the human body 360 degrees and zoom in and out. You can choose between models and view the human anatomy at many levels. You can view the human anatomy at skin level, at bone level, kidney, heart, brain, nerves etc. You can click on any body part to learn more about it.
This application does not require any kind of plugin to be installed on your browser. It will simply work. You must try it.