1. Complex Carbohydrate Research Center; Department of Biochemistry and Molecular Biology; University of Georgia; Athens GA 30602 USA
2. Institute of Chinese Materia Medica; Shanghai University of Traditional Chinese Medicine; Shanghai 201203 P. R. China
3. Department of Pathology and Microbiology; Mass Spectrometry and Proteomics Core Facility; University of Nebraska Medical Center; Omaha NE 68198 USA