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The pharyngeal microbiota composition diversity was affected by smog. (A) The pharyngeal microbiota composition diversity at the phylum, family, and genus levels. (B) The top 100 most abundant genera between the pre- and post-smog data. The sizes of the nodes correspond to the relative abundance at the corresponding levels in the cohort. (C) The origins of 142 new bacterial genera detected only in post-smog samples.
