The Complete List of Suppliers for Ceramide,1-O-[O-(N-acetyl-a-neuraminosyl)-(2®3)-O-b-D-galactopyranosyl-(1®4)-O-[6-deoxy-a-L-galactopyranosyl-(1®3)]-O-2-(acetylamino)-2-deoxy-b-D-glucopyranosyl-(1®3)-O-b-D-galactopyranosyl-(1®4)-O-[6-deoxy-a-L-galactopyranosyl-(1®3)]-O-2-(acetylamino)-2-deoxy-b-D-glucopyranosyl-(1®3)-O-b-D-galactopyranosyl-(1®4)-b-D-glucopyranosyl]-