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Keywords:

  • Fucus serratus;
  • Fucus vesiculosus;
  • physodes;
  • X-ray micro-analysis

The localisation of absorbed copper in the brown seaweeds Fucus vesiculosus L. and Fucus serratus L. was studied by X-ray microanalysis in the electron microscope. The metal was localised in the physodes of the photosynthetic and inner non-photosyn-thetic cells. No significant copper was found in the cell walls of these algae, which had been collected from sites which were continually polluted by run-off from old copper mines.