A three-dimensional reconstruction of the internal membranes of a yeast cell using scanning electron microscopy. The cell wall has been removed and the organelles highlighted with false color to reveal the endoplasmic reticulum (yellow), mitochondria (red), and nucleus (blue). Cell diameter is 3.5 µm.

[From Wei, D. et al., “High-resolution three-dimensional reconstruction of a whole yeast cell using focused-ion beam scanning electron microscopy,” Biotechniques, 2012, 53(1):41–48.]