Selectin Ligands and Tumor-Associated Carbohydrate Structures: Specificities of .alpha.2,3-Sialyltransferases in the Assembly of 3'-Sialyl-6-sulfo/sialyl Lewis a and x, 3'-Sialyl-6'-sulfo Lewis x, and 3'-Sialyl-6-sialyl/sulfo Blood Group T-hapten

Abstract
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