title: Significance of heavy chain mass and antigenic relationship in immunoglobulin evolution.
mesh_terms: D000818:Animals; D000941:Antigens / Q000032:analysis*; D005075:Biological Evolution; D002645:Chickens; D002845:Chromatography; D002850:Chromatography, Gel; D004372:Ducks; D005399:Fishes; D006801:Humans; D007136:Immunoglobulins / Q000302:isolation & purification; D008970:Molecular Weight; D011817:Rabbits; D012754:Sharks; D014426:Turtles; D005719:gamma-Globulins / Q000302:isolation & purification*
chemical_list: D000941:Antigens; D007136:Immunoglobulins; D005719:gamma-Globulins