SNAI2 and neoplasm: At the end of the experiment, tumor tissues were subjected to Masson’s trichrome staining and immunological evaluation of aSMA, showing that the matrix content in tumors of the Ade-SNAI2 co-injection group was the strongest, followed by the Ade-nc co-injection group and the SKOV3-Luc solitary group (Fig. 7d–e).