we conclude that these experiments have implicated igg as well as iga antibodies in local humoral responses to inhaled antigen , have not substantiated the notion of a common mucosal immune system involving lung and gut , have failed to demonstrate humoral tolerogenesis after inhalation of antigen , and have shown an effect of systemic priming on subsequent pulmonary immune responses in the models examined .
C0003320
antigen
C0301872
immune responses