title: Solution to "Doctrine of Signatures" challenge.
authors: Biology Department, College of St. Benedict, St. Joseph, MN 56374, USA. ssaupe@csbsju.edu
authors: Stephen G
authors: SG
authors: Saupe
authors: Katherine E
authors: KE
authors: Sharpless
mesh_terms: D001363:Awards and Prizes; D010944:Plants / Q000737:chemistry*