title: Isolation from nurse shark serum of immune 7S antibodies with two different molecular weight H-chains.
mesh_terms: D000818:Animals; D000906:Antibodies / Q000302:isolation & purification*; D002845:Chromatography; D004591:Electrophoresis, Polyacrylamide Gel; D007074:Immunoglobulin G / Q000276:immunology*; D007143:Immunoglobulin Heavy Chains / Q000032:analysis; D008970:Molecular Weight; D012754:Sharks / Q000276:immunology*
chemical_list: D000906:Antibodies; D007074:Immunoglobulin G; D007143:Immunoglobulin Heavy Chains