BIOPHOTO ASSOCIATES / SCIENCE PHOTO LIBRARY BIOPHOTO ASSOCIATES / SCIENCE PHOTO LIBRARY
Scanning Electron Micrograph (SEM) of Calcarina spengleri, a species belonging to the order Foraminifera, marine amoeboid protozoa with shells of varied chemistry and construction which feed by delicate anastomosing rhizopoda composed of constantly streaming cytoplasm. Magnified 100X at 8x10'.
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