Light micrograph of Paramecium caudatum protozoa, showing food vacuoles containing red-stained yeast cells, which they were fed to show the process by

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Light micrograph of Paramecium caudatum protozoa, showing food vacuoles containing red-stained yeast cells, which they were fed to show the process by which they ingest and digest their food. The yeast cells were stained with Congo red, a stain indicating low pH values by changing colour to blue. Microscopic contrast method: Differential interference contrast. Magnification: x400 when printed at 10 centimetres wide.

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Size: 5616px × 3744px
Photo credit: © GERD GUENTHER/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

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