Color-enhanced scanning electron micrograph (SEM) of starch granules. Chestnuts were ground with water and the milky, slowly sedimenting "cloud" was filtered off, dried, and photographed by SEM. Chestnuts have a high carbohydrate content and have been used as pseudocereals. Image width: 64 micrometers. Magnification: 1560x if the image is pritned 10 cm wide.