DENNIS KUNKEL MICROSCOPY / SCIENCE PHOTO LIBRARY DENNIS KUNKEL MICROSCOPY / SCIENCE PHOTO LIBRARY
Scanning electron micrograph (SEM) of a fractured surface of a piece of cheddar cheese. Also seen are small yeast cells contaminating this piece of cheese. Cheddar cheese is a hard cheese prepared from cow's milk by process called cheddaring, a method originally from Cheddar in Somerset, England. Cheddaring refers to an additional step in the production of Cheddar-style cheese where, after heating, the curd is kneaded with salt, then is cut into cubes to drain the whey, then stacked and turned. Cheeses are a good source of calcium, but contain high levels of fat. Magnification: x535 when shortest axis printed at 25 millimetres.
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