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Biotransformation of a sublethal dose of HgII (120 ppb HgCl2) by the prokaryotic blue-green alga Limnothrix planctonica over 5 h, showing total (alkaline-detectable) (▪) and acid-detectable (•) inorganic Hg. The culture had an initial OD665 of 0.32. Values are means and SE; n = 3.
