Figure 1. Exemplar TEM images of mitochondria, autophagic vacuoles and intercellular junctions.

(A) The membrane enclosed structures containing filamentous cristae were identified as mitochondria (white arrowheads, ‘m’). Both round and cylindrical mitochondria were observed. (B) Membrane-enclosed structures comprising what appeared to be electron dense and partially digested cellular material, were identified as autophagic vacuoles (white arrowheads, ‘av’). (C, D) Intercellular junctions (white arrowheads, ‘ij’) were identified by the presence of electron-dense regions on the apposing membranes of adjacent cells. Scale bar = 500 nm.