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The middle uterine artery of gilts was occluded unilaterally or bilaterally from Days 25 to 70 after mating. The results showed that vascular occlusion of one (N = 7) or both (N = 6) middle uterine arteries during mid-pregnancy markedly reduced, compared with sham-operated controls (N = 7), development of the conceptuses and decreased peripheral oestrogen (oestrone + oestradiol-17 beta) concentrations in maternal blood.
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Molina et al. (1985) studied this question.
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