Drupal-Bibcite0<style face="normal" font="default" size="100%">Immunoglobulin G1 (IgG1) and IgG3 antibodies are markers of progressive disease in leprosy.</style><style face="normal" font="default" size="100%">Immunoglobulin G1 (IgG1) and IgG3 antibodies are markers of progressive disease in leprosy.</style>