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Comparison of transition probabilities P(AO|KE4) at WCS exposures 3 and 6, using different activation thresholds. Probabilities of transitioning from KE4 to AO under three doses of WCS at exposures 3 (AO_3) or 6 (AO_6), calculated under activation thresholds defined as fold change values = 2–32 relative to the air-exposure control value.
