P-D-Xylosides and their analogues as artificial initiators of glycosaminoglycan chain synthesis. Aglycone-related variation in their effectiveness in vitro and in ovo - Sobue, M; Habuchi, H; Ito, K; Yonekura, H; Oguri, K; Sakurai, K; Kamohara, S; Ueno, Y; Noyori, R; Suzuki, S (Biochem J, 1987)