Fig. 5
Transmission electron microscopy images of mitochondria in CE, EU, and EC. a Representative images of cells in CE, EU, and EC tissues (magnification, ×6800; scale bar, 5 μm). b Representative images of mitochondria in CE, EU, and EC tissue (23,000×; scale bar, 2 μm) and their locally magnified images. Red arrows: mitochondrial cristae width; blue arrows: width of mitochondria cristae junction. c–f Quantification of mitochondrial number per 30 μm2 (c), mitochondrial length (d), cristae width (e), and cristae junction width (f) between the three groups (n = 21–42 cells per group and 65–92 mitochondria per group and 45–69 cristae per group. *P < 0.05; **P < 0.01; ***P < 0.001; ****P < 0.0001)