BETA-D-GALACTOSYL-ETCETERA-GALACTOSAMINY beta-D-galactosyl-1,3-N-acetyl-D-galactosaminyl-R beta-D-galactosyl-1,3-N-acetyl-alpha-D-galactosaminyl-R glycoprotein D-galactosyl-1,3-N-acetyl-D-galactosamine