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Ultrastructural observation of swine small intestine tissues and IPEC-J2 cells. (A) Swine small intestine tissues (scale bar, 5 μm) and (B) IPEC-J2 cells were small intestine tissues observed using TEM (scale bar, 2 μm). Blue arrows pointing to normal mitochondria. Red arrows pointing to autophagosome. IPEC-J2 = intestinal porcine enterocyte cell line; TEM = transmission electron microscope.
