beta-D-Gal-(1->4)-beta-D-GlcNAc-(1->3)-beta-D-Gal-(1->4)-D-Glc binding
beta-d-gal-(1->4)-beta-d-glcnac-(1->3)-beta-d-gal-(1->4)-d-glc binding
Binding to beta-D-Gal-(1->4)-beta-D-GlcNAc-(1->3)-beta-D-Gal-(1->4)-D-Glc.