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Unrooted dendrogram showing the phylogenetic position of a novel spotted fever group Rickettsia sp. detected in A. maculatum ticks, inferred from comparison of 1,095 nucleotides of the citrate synthase gene (gltA) sequence aligned with complete or partial gltA sequences available in GenBank by using the neighbor-joining method. Bootstrap values of >70% for 1,000 replicates are indicated at the nodes. Bar = 1% nucleotide sequence divergence.
