The correct labelling for A and B blood groups are as
follows:
Blood group O
                                                                                                                                      Â
L-Fucose
|
RED blood Cell membrane lipid---- Glucose
---- D-Galactose ---- N-Acetyl-D-glucosamine ----
D-Galactose
Blood group B
                                                                                                                                       Â
L-Fucose
|
RED blood Cell membrane lipid---- Glucose ----
D-Galactose ---- N-Acetyl-D-glucosamine ---- D-Galactose
|
D-Galactose