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The distribution of luliberin (luteinizing hormone-releasing hormone, LH-RH) was studied. LH-RH-like factor showing analogous immunochemical and chromatographic properties was detected in the liver, kidneys, duodenum, pancreas, adrenal glands and heart of rats. The concentration of immunoreactive LH-RH in the liver, kidneys, duodenum, pancreas and adrenal glands was nearly equal (5 to 7 pg per mg of methanol extract obtained from acetic acid extract of acetone powder), its concentration in the heart being somewhat lower (2 pg per mg of extract). Only minute amounts of this factor were present in blood cells. Immunoreactive LH-RH found in visceral organs may be of hypothalamic origin or may be synthesized in these organs (in situ).

It has been found that bremazocine predominantly enhances the flexor reflex of the right hind limb, without affecting the left limb. The similarity of the visual data measuring the asymmetry of the pose and the asymmetry of EMG responses to painful stimulation has a high probability. No correlation between the asymmetry of the pose and EMG extensor activity has been found.