Sex-related differences in the concentration of Met-enkephalin-like immunoreactivity in the nervous system of an insect, Schistocerca gregaria, revealed by radioimmunoassay.


A radioimmunoassay has been used to measure Met-enkephalin-like immunoreactivity in tissue from male and female locusts, Schistocerca gregaria. The pattern of distribution within the two sexes was similar with about equal amounts present in the suboesophageal and 3 thoracic ganglia and a lower concentration in the cerebral ganglion. Female nervous tissue… (More)


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