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Different RNA species are rigorously discriminated and exported by distinct export factors, but this discrimination mechanism remains largely unknown. We previously showed, by RNA microinjection experiments, that intronless mRNAs are discriminated from U snRNAs based on their difference in RNA length. However, it was unclear how they are discriminated in(More)
Relationship between serum gastrin levels and gastric secretion was studied in Heidenhain pouch dogs. Bethanecol and tetramethylammonium increased gastric secretion without any significant change in the serum immunoreactive gastrin (IRG) level. Histamine increased gastric secretion but decreased the serum IRG level. Tetragastrin evoked gastric secretion(More)
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