although this glycoprotein was similar in size to glycoprotein d ( gd ) , it was shown to be less abundant in both virions and infected cells , to migrate more rapidly in its precursor form , to incorporate glucosamine but not mannose , and to have a more stable precursor in tunicamycin-treated cells than the gd precursor ( pgd ) .
C0007634
cells
C0018956
precursor