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. 2000 Jul;66(7):3078–3082. doi: 10.1128/aem.66.7.3078-3082.2000

FIG. 3.

FIG. 3

Abundance of major phylogenetic groups in river biofilms during one annual cycle as determined by whole-cell hybridization of biofilm samples with rRNA-targeted fluorescent probes. Alpha, α-Proteobacteria; Beta, β-Proteobacteria; Gamma, γ-Proteobacteria; CF, CF cluster; GPHGC, gram-positive bacteria with high G+C contents. (A) Elbe River. (B) Spittelwasser River.