blood group B antigen

^[1]

Introduction

        a1->3     b1->4        b1->3
    Gal _____ Gal _____ GlcNAc ____ Gal
               |
         a1->2 |
               |
              Fuc

↑ American Association of Blood Banks (AABB) Technical Manual, 9th edition, 1985, pg 119