The Beginnings of Sialic Acid (A. Rosenberg). Biochemistry and Role of Sialic Acids (R. Schauer et al.). Biological Specificity of Sialyltransferases (S. Basu et al.). Sialobiology and the Polysialic Acid Glycotope: Occurrence, Structure, Function, Synthesis and Glycopathology (F.A. Troy II). Biochemistry and Oncology of Sialoglycoproteins (V.P. Bhavanandan, K. Furukawa). Cellular Biology of Gangliosides (Y. Nagai, M. Iwamori). Role of Gangliosides in Transmembrane Signaling and Cell Recognition (S.I. Hakomori). Biochemistry and Function of Sialidases (M. Saito, R.K. Yu). Sialic Acid as Receptor Determinant of Ortho and Paramyxoviruses (G. Herrler et al.). Sialic Acid in Biochemical Pathology (K. Suzuki). Neurite Loss Caused by Ganglioside Undersialylation (A. Rosenberg). Index.