Take a look at my results when I performed a search for "tonsillitis." Notice the menu options across the top and the "Download PDF" link at the bottom.
My initial thought about using this amazing feature was that it would be very helpful in understanding my own health and that of my family. I have since really found benefit in using this Google Search feature to assist in science, health, physical education, and medical classrooms.
This is just another great example of how Google Search has evolved into an amazing educational tool. Give it shot!