title: Evolution of conformational flexibility of immunoglobulin M.
mesh_terms: D000818:Animals; D000918:Antibody Specificity; D001666:Binding Sites, Antibody; D005075:Biological Evolution; D006736:Horses / Q000276:immunology; D007140:Immunoglobulin Fab Fragments / Q000032:analysis; D007141:Immunoglobulin Fc Fragments / Q000032:analysis; D007075:Immunoglobulin M / Q000032:analysis; D008433:Mathematics; D011487:Protein Conformation; D012754:Sharks / Q000276:immunology; D013552:Swine / Q000276:immunology
chemical_list: D007140:Immunoglobulin Fab Fragments; D007141:Immunoglobulin Fc Fragments; D007075:Immunoglobulin M