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Cyanobacterial phylogenies inferred from ∼950 bp of 16S rRNA gene sequence data by using neighbor-joining (A), maximum-parsimony (B), and maximum-likelihood (C) methods. Synechococcus clones from Hunter's Hot Springs are indicated by capital letters. A value at a node indicates the percentage of the time that the taxa to the right of the node formed a clade for 100 (A and C) or 1,000 (B) bootstrap pseudoreplicates. Only bootstrap values greater than 50% are indicated.
