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Contractions in response to caffeine after incubation in Ca2+ free buffer were evaluated in aorta from (A) Sham (white bars) and OVX (grey bars) WKY rats, or in aortas from (B) Sham (black bars) or OVX (hatched bars) SHRSP rats. Values are expressed as mean ± SEM.; † P< 0.05 versus respective DMSO.
