ROCKVILLE, Md.--(BUSINESS WIRE)--Rexahn Pharmaceuticals, Inc. (NYSE Amex: RNN), a clinical stage pharmaceutical company commercializing potential best in class oncology and CNS therapeutics, today announced that it has submitted a Phase II protocol to the U.S. Food and Drug Administration (FDA) for the clinical study of Serdaxin® for the treatment of Parkinson’s disease (PD).
