DON W. FAWCETT / SCIENCE PHOTO LIBRARY DON W. FAWCETT / SCIENCE PHOTO LIBRARY
Electron micrograph of lipid droplets in cytoplasm of an interstitial cell from the testis of a ground squirrel (Citellus lateralis) and smooth endoplasmic reticulum. For the original black-and-white image see: 9E6337.
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