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Representative recording of the effects of a unilateral uterine arterial infusion of TEA (0.04 mmol/L) on mean arterial pressure, heart rate, and left and right uterine blood flow in a term pregnant ewe before and during the cumulative PE dose response. Responses shown are at 10 minutes of PE infusion ± 2 minutes. TEA indicates tetraethylammonium; PE, phenylephrine.
