What makes all the types of immunoglobulins different? do they look different?

Yes, look different: Immunoglobulins also known as antibodies or gamma-globulins, are made are made of light chains and heavy chains. The different heavy chains are the bid difference between the immunoglobulins. Alpha1 abd alpha2 (IgA), Gamma 1-4 (IgG),Epsilon (IgE) and Delta (IgD). IgM is made up of 5 antibodies(a pentamer) arranged like the spokes of a wheel. It takes Xray diffraction optics to "see" the differen