and cis-medial cisternae (red, green) to the trans-Golgi network (blue, yellow, orange–red); immature proinsulin granules (condensing vesicles) are
shown in pale blue and mature (crystalline) insulin granules in dark blue . The flat colour areas represent cut faces of cisternae and vesicles . E, Rough
endoplasmic reticulum (R), associated with the Golgi apparatus (G) . (D, Courtesy of Dr Brad Marsh, Institute for Molecular Bioscience, University of
Queensland, Brisbane . A,B,E From human tissue, courtesy of Dr Bart Wagner, Histopathology Department, Sheffield Teaching Hospitals, UK .)