Lectins, as a class of non-enzyme and non-antibody sugar-binding proteins, have the property of specifically binding sugars. Agglutination experiments based on the interaction of lectins with glycosyl compounds on the surface of bacteria have been successfully applied to identify bacterial species and study the expression of glycosyl compounds on the surface of bacteria. Gold nano is a kind of nano material with good biocompatibility. gold nanoparticles labeled lectin https://bioconjugation.bocsci.com/services/gold-nanoparticles-labeled-lectin.html