title: Genetic aspects of the Pi system.
mesh_terms: D000328:Adult; D005260:Female; D005796:Genes; D006801:Humans; D007231:Infant, Newborn; D008297:Male; D010375:Pedigree; D010641:Phenotype; D011110:Polymorphism, Genetic; D000515:alpha 1-Antitrypsin / Q000096:biosynthesis*
chemical_list: D000515:alpha 1-Antitrypsin