The OC3 stroma showed fibronectin (Fn1)—and transforming growth factor beta (TGFβ)—related GO terms, including glycosaminoglycan binding, cell adhesion, heparin binding, osteoblast differentiation, extracellular matrix organization, molecules associated with elastic fibers, embryonic cranial skeleton morphogenesis, ECM–receptor interactions, pathways in cancer, and positive regulation of mesenchymal cell proliferation. The gene discussed is MMRN1; the disease is cancer.