Top view (top) and side view (bottom) of the copepod species Eurytemora affinis, which Aruda studies. On its shell and inside its body this copepod species can carry large amounts of Vibrio cholerae, the bacteria that causes the deadly disease cholera. The side view appears larger than the top view, but the animals are the same size—about 1 milimeter (0.04 inch) long. (Microscope photos by Amalia Aruda, Woods Hole Oceanographic Institution)[back]
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