User blog comment:JapaneseOPfan/Lesson Two (Animal Sounds)/@comment-1949364-20110210011644/@comment-3181121-20110211174128

http://en.wikipedia.org/wiki/Rod_of_Asclepius

That's one of the popular symbols for medicine, based on the Greek god Asclepius and the other one as you've pointed out is the staff of hermes:

http://en.wikipedia.org/wiki/Caduceus