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The marine bacteria Trichodesmium come in a rainbow of colors. Cells from three different cultures of the
marine bacteria Trichodesmium have been concentrated on a filter and
then popped in a buffer so the cells' pigments can be analyzed. The
diversity of pigments may allow different species to use different
colors of light for photosynthesis.
(Photo by Annette Hynes, Woods Hole Oceanographic Institution)[back]
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