BIOPHOTO ASSOCIATES / SCIENCE PHOTO LIBRARY BIOPHOTO ASSOCIATES / SCIENCE PHOTO LIBRARY
Colour enhanced scanning electron micrograph (SEM) of Erysiphe graminis f. hordei fungus (also called Blumeria graminis) on a barley leaf. Shown here is a close-up of conidia, a powdery mildew. Magnification: 4250x.
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