LTF and idiopathic pulmonary fibrosis: The humoral immune response complex was characterized by the terms antimicrobial humoral response (GO:0019730), antimicrobial peptides (R-HSA-6803157), humoral immune response (GO:0006959) and systemic lupus erythematosus (KEGG:05322), being similar to that obtained in the IPF group with PJ; it was formed by the proteins ELANE, H3-5, LTF and PRTN3.