Terumasa Yamamoto

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The present study was designed to produce the experimental carcinoma of the biliary tract in dogs. Tube cholecystostomy was constructed in 8 mongrel dogs and 5–10 ml of 0.7–1.0 mg/ml solution of N-ethyl-N’-nitro-N-nitrosoguanidine (ENNG) was administered through the tube every day for the maximum period of 180 days. As the results: The experiment had to be(More)
A programable quadrupole mass spectrometer has been developed to make continuous observation of the gaseous pollutant materials and respiratory gases,.and to make continuous monitoring of the gaseous species present in the high vacuum atmosphere.The equipment has a multi-channel high speed programable scanner which consists of high speed IC switching(More)
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