Tadashi Hiruta

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Single cells were prepared from the guinea-pig taenia caecum and used for the study of drug-receptor interactions. The cells showed a graded response to carbachol, the dose response curve being shifted in a parallel fashion by atropine, indicating a competitive antagonism. The pA2-value of atropine was in agreement with that estimated using the intact(More)
The mode of action of nicotine was studied in a rabbit bronchial preparation. Nicotine (3 X 10(-5)-10(-3) M) produced a phasic contraction. No inhibitory response to nicotine was observed. The contractile response to nicotine was inhibited by hexamethonium, pentolinium and atropine but not by tetrodotoxin. Nicotine increased the efflux of tritium from(More)
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