An antibody that binds a glycosylated protein is disclosed, wherein the glycosylation comprises the glycan motif Fucα1-2Galβ1-3GlcNAc1-3Galβ1 or Fucα1-2Galβ1-3GlcNAc. Antibodies that are cytotoxic against undifferentiated pluripotent cells are also disclosed.
