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EXPERIENCES WITH THE 'VENUS' HEART METHOD FOR DETERMINING ACETYLCHOLINE |
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Canadian Journal of Research,
Volume 26e,
Issue 2,
1948,
Page 183-187
Donald B. Tower,
Donald McEachern,
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摘要:
Experiences with a little known method for determining acetylcholine in biological materials are reported. The test object is the isolated ventricle of the quahaug,Venus mercenaria, a preparation that is stable for many hours. Its minimal sensitivity for acetylcholine is between 0.005 and 0.01 µgm. %. The method is simple and highly specific, and the preparation may be used repeatedly, as often as every 5 to 10 min. Details of the method with illustrative results are given.
ISSN:1923-4287
DOI:10.1139/cjr48e-004
出版商:NRC Research Press
年代:1948
数据来源: NRC
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2. |
THE MICRODETERMINATION OF SODIUM, POTASSIUM, CALCIUM, AND CHLORIDE IN A SINGLE PLASMA SAMPLE |
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Canadian Journal of Research,
Volume 26e,
Issue 2,
1948,
Page 188-195
John R. Polley,
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PDF (456KB)
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摘要:
A procedure involving a single protein-precipitation step for the determination of sodium, potassium, calcium, and chloride in a single 0.4 ml. sample of plasma is described. The chloride and sodium methods are titrimetric, the potassium and calcium methods are colorimetric and all are accurate within ± 3%.
ISSN:1923-4287
DOI:10.1139/cjr48e-005
出版商:NRC Research Press
年代:1948
数据来源: NRC
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