Fig. 2From: The 3D8 single chain variable fragment protein suppresses Newcastle disease virus transmission in transgenic chickensImmunohistochemistry of the tracheal tissues against 3D8 scFv from wild-type (a) and 3D8 transgenic chickens (b). The tracheal tissue of the 3D8 scFv transgenic chicken exhibited a dark brown color after DAB staining. The 3D8 transgenic chicken showed stronger staining of the lymphocytes of the tracheal lamina propria surface. PCE, pseudostratified columnar ciliated epithelium; GC, goblet cells; BM, basement membrane. The scale bar represents 50Ā Āµm. 400XBack to article page