“…Although many types of mitochondrial cristae structure have been described (Munn, 1974), from recent electron microscopic tomography studies, the differences between typical mitochondria are now evident; e.g., liver (Mannella, 1994(Mannella, , 1997, neuronal (Perkins, 1997(Perkins, , 2001a, brown adipose tissue (Perkins et al, 1998), fungus (Nicastro et al, 2000;Perkins et al, 2001b), rods and cones (Perkins, 2003), and those from steroidogenic tissues, e.g., Leydig cells (Prince, 2002). In general, cristae from typical mitochondria are lamellar while in steroidogenic cells are tubular, vesicular, or tubulovesicular (Reichert et al, 2002).…”