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High magnification electron micrograph of the trypanosome surface coat This picture shows a thin slice through a trypanosome viewed at high magnification in an electron microcope. The Surface Coat, which lies on the outside of the double lines of the cell membrane, is about 12 nanometers (12 billionths of a meter) thick, which is equivalent to the longer dimension of the Variant Surface Glycoprotein (VSG) molecules that form the coat.  
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