title: Considerations on the cause of disappearance of the adrenergic transmitter in uterine nerves during pregnancy.
mesh_terms: D000818:Animals; D005260:Female; D006168:Guinea Pigs; D006651:Histocytochemistry; D008856:Microscopy, Fluorescence; D009130:Muscle, Smooth / Q000294:innervation*; D009474:Neurons; D009638:Norepinephrine / Q000032:analysis*; D011247:Pregnancy; D011270:Pregnancy, Animal; D013564:Sympathetic Nervous System; D009435:Synaptic Transmission; D014599:Uterus / Q000032:analysis / Q000294:innervation*
chemical_list: D009638:Norepinephrine