Immunofluorescence staining showed that, compared with parental lung cancer cells, MSC-lung cancer hybrids exhibited a strong reduction in protein expression of E-cadherin and pancytokeratins as well as significantly increased expression of vimentin, α-SMA and fibronectin in all three NSCLC cell lines (Figures 3A–E). Here, FN1 is linked to lung carcinoma.