<prompt> True about alpha-1 antitrypsin deficiency,is :Autosomal dominantPulmonary emphysemaDisease resistant hepatic cellsHepatic cells are orcein stain positive  <response>: Alpha-1 antitrypsin deficiency is an autosomal recessive disease marked by abnormally low serum levels of alpha1 AT enzyme resulting in panacinar emphysema.ref Robbins 9e p675-676 