Now, antibodies are also glycoproteins, which basically are found floating within our blood plasma. And we have many different types of antibodies. So what these immunoglobulins do is basically they bind onto pathogenic or infectious antigens and they initiate some type of immune defense or response that ultimately kills off that infecting agent. So it protects our body from these different types of infectious agents. So we see that glycoproteins have a wide range of functionality. So some glycoproteins basically absorb water and act as lubricants and also protect our body from infectious agents.