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Effect of BK blocker on PDBu-induced contractions of uterine arteries from normoxic and hypoxic pregnant sheep. PDBu-induced contractions were determined in uterine arteries obtained from nomoxic (panel A) and hypoxic (panel B) pregnant sheep in the absence (control) or presence of 1 mM TEA pretreatment for 20 min. Data are means ± SEM of tissues from 4 animals in each group.
