Gelberg, H., Healy, L., Whiteley, H., Miller, L.A. and Vimr, E. (1996) In Vivo Enzymatic Removal of Alpha 2-->6- Linked Sialic Acid from the Glomerular Filtration Barrier Results in Podocyte Charge Alteration and Glomerular Injury. Laboratory Investigation: A Journal of Technical Methods and Pathology, 74, 907-920.