Hexosamines article 12 hexosamine 10 Glucosamine 6 Mannose 6 mannose 6 Animal 4 Animals 4 Esterification 4 Galactose 4 Glucose 4 Glycosylation 4 Guanine Nucleotides 4 Hexoses 4 Hydrogen-Ion Concentration 4 Methyl glycosides 4 Nucleoside Diphosphate Sugars 4 Nucleotides 4 Rats 4 Uracil Nucleotides 4 galactose 4 glucosamine 4 glucose 4 glycosylation 4 guanine nucleotide 4 hexose 4 human 4 in vitro study 4 nonhuman 4 nucleoside diphosphate sugar 4