Fine structural changes of the uterine smooth muscle cell boundary during gestation.
D000818:Animals; D001485:Basement Membrane; D005110:Extracellular Space; D005260:Female; D006168:Guinea Pigs; D008854:Microscopy, Electron; D009130:Muscle, Smooth / Q000166:cytology*; D011247:Pregnancy; D014599:Uterus / Q000166:cytology*