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Serial changes in serum gastrin level were detected by radioimmunoassay in 58 lung cancer patients before and after operation. In comparing these tests with those of 40 cases of noncancerous thoracic lesions and 151 normal adults, the serum gastrin from lung cancer patients is significantly higher than that of noncancerous thoracic lesions and normal(More)
  • Z Tain
  • Ren kou yan jiu = Renkou yanjiu
  • 1983
Within Marxist ideology are important population theories that led to the establishment of demography and the work of population control in China. Marxist population theory should be studied in order to build a scientific system of concepts in population theory. Both Marx and Engels spoke of the relationship between human reproduction and material(More)
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