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Ethidium bromide stained 1% (w/v) agarose gel showing PCR reactions of photosynthetically active E. chlorotica (E) and V. litorea (V) DNA and negative water control (W) using primers specific for the V. litorea ITS region (lanes 2–4) or rbcL (lanes 5–7). Also shown is 0.5 g of size standards (1-kb ladder, Gibco-BRL, no. 15615-016); SS, lane 1.
