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Distribution of each log-transformed inflammatory biomarker (or biomarker ratio) by mid-pregnancy BTEX exposure (defined as high exposure if above the median and low exposure if below the median; median = 7.98 μg/m3). Mid-pregnancy BTEX exposure is the average exposure from the start of pregnancy through the time of inflammatory biomarker measurement. BTEX, benzene, toluene, ethylbenzene, xylene; CRP, C-reactive protein; IL, interleukin; TNF-α, tumor necrosis factor-α.
