PTPRC and idiopathic pulmonary fibrosis: Herein, we demonstrate that CD45+ myeloid cells isolated from IPF and PASC-F lung explant tissue (sourced from random cores of diseased lung tissue biopsied from discarded IPF or PASC-F lungs following transplantation and banked for IRB-approved research use) have an impaired capacity to clear autologous cellular debris and phagocytose foreign bioparticles in in vitro assays.