To our knowledge, this is the first demonstration of selective enrichment in exosomes of immunomodulatory components (T- and B-cell immune responses and MHC I/II-peptide antigen processing and presentation), signal transduction molecules (ALCAM, HSP90AA1, LGALS1, TNIK), and metastatic factors (MET, MIF, S100A10, S100A11, TNC, MMP2, ADAM10, ADAMTS1) in different human mesothelioma models. The gene discussed is MIF; the disease is mesothelioma.