Fig. 4From: Chronic exposure to ambient particulate matter induces gut microbial dysbiosis in a rat COPD modelGut microbial abundance and diversity following exposure to biomass fuel or motor vehicle exhaust. Comparison of the operational taxonomic units (OTUs) (a) and alpha diversity (as assessed by the Chao 1 (b) and PD_whole_tree (c) indices; n = 6 per group). CON, control group; BMF, biomass fuel exposure group; MVE, motor vehicle exhaust exposure groupBack to article page