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Neighbour joining tree showing phylogenetic relatedness among human gut bacterial and archaeal 16S rRNA genes based on Jukes Cantor model. Nucleotide sequences were retrieved from NCBI database and the values at the branches denote bootstrap values obtained upon 1000 iterations. Coloured brackets indicate various phyla Evolutionary analyses were conducted in MEGAX (Felsenstein 1985; Jukes and Cantor 1969; Kumar et al. 2016; Saitou and Nei 1987)
