Autoantibodies against inner nuclear membrane protein LBR from patients with primary biliary cirrhosis recognize a conformational epitope within the nucleoplasmic domain . Departments of Medicine and of Anatomy and Cell Biology, College of Physicians and Surgeons, Columbia University, New York; *Department of Medicine, Albert Einstein College of Medicine, New York; and **Department de Biologie Cellulaire, Institut Jacques Monod du CNRS, Université Paris 7, Paris