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Task based variation in dust (3A), endotoxin (3B), 3-OHFA (3C), ammonia (3D), and muramic acid (3E) exposures in high plains U.S. dairies 2007–2011. Dashed line in dust, endotoxin, and ammonia figures represents OELadj. R2 interpretation: Task explains x% of variation between these groups.
