NINJ1 and pulmonary fibrosis: However, in the study of lung fibrosis and Ninj1, we demonstrated similar numbers of infiltrating macrophages in bronchoalveolar lavage fluids of bleomycin-treated WT and Ninj1 KO mice for lung fibrosis, indicating that macrophage infiltration does not determine the phenotypic difference between bleomycin-treated WT and Ninj1 KO mice [5].