IDENTIFICATION AND OLIGOSACCHARIDE STRUCTURE-ANALYSIS OF RHODOPSIN GLYCOFORMS CONTAINING GALACTOSE AND SIALIC-ACID - DUFFIN, KL; LANGE, GW; WELPLY, JK; FLORMAN, R; OBRIEN, PJ; DELL, A; REASON, AJ; MORRIS, HR; FLIESLER, SJ (GLYCOBIOLOGY, 1993)