while disialogangliosides of esb cells were identified as gd1a and gd1b , a disialoganglioside isolated from eb cells was characterized as having a novel structure ( referred to as gd1 alpha ) as follows : ( formula ; see text ) thus , eb and esb cells are clearly different in their qualitative sialylation patterns , i.e. , the position of sialic acid residues .
C0205396
identified
C0205556
qualitative