Abstract:Summary ― Spontaneous electromyographic (EMG) activity of the oviduct recorded in vivo inuntreated, estrogen-treated, and progesterone-treated castrated rabbits was found to exhibit two main patterns : short spike bursts lasting 1-10 s and long trains of action potentials lasting several minutes, which constituted the major component of EMG activity.After estrogen treatment, both wet weight and noradrenaline (NA) content of the castrated rabbit oviduct were enhanced mainly at the ampullary-isthmic junct… Show more
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