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(A) Effects of chlorhexidine and nutrient treatments on the composition of river biofilm exopolymer, as determined by in situ lectin binding analyses. Parameters indicated by different letters are significantly different (P < 0.05). (B) Impacts of treatments on the relative abundances of lectin binding sites in the river biofilms. A panel of five lectins was used to assess the nature of the glycoconjugates present in the biofilms.
