title: Alpha 1 -antitrypsin Pi types by crossed-electrophoresis.
mesh_terms: D000510:Alpha-Globulins / Q000145:classification*; D002021:Buffers; D004592:Electrophoresis, Starch Gel; D014644:Genetic Variation; D006801:Humans; D006863:Hydrogen-Ion Concentration; D007106:Immune Sera / Q000032:analysis; D007122:Immunoelectrophoresis; D008722:Methods; D010641:Phenotype; D014361:Trypsin Inhibitors / Q000145:classification*
chemical_list: D000510:Alpha-Globulins; D002021:Buffers; D007106:Immune Sera; D014361:Trypsin Inhibitors