Ultrastructure of the porcine myometrium during pregnancy.
The fine structure of myometrium from pigs collected at well-defined stages during pregnancy was investigated by transmission electron microscopy. The morphology of the pregnant myometrium resembled that in non-pregnant pigs. Thick myofilaments were conspicuous during early pregnancy, inapparent during mid-pregnancy and visible again by days 80-84 and towards parturition. Gap junctions were extremely rare throughout pregnancy. Only occasionally were nerve axons observed.
Thilander
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Department of Anatomy and Histology, Faculty of Veterinary Medicine, Swedish University of Agricultural Sciences, Uppsala.
Rodriguez-Martinez
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D000818:Animals; D005260:Female; D007365:Intercellular Junctions / Q000648:ultrastructure; D008854:Microscopy, Electron; D009215:Myometrium / Q000294:innervation / Q000648:ultrastructure*; D011247:Pregnancy; D011270:Pregnancy, Animal; D013552:Swine / Q000033:anatomy & histology*