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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
969
|
pubmed:dateCreated |
1971-2-11
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pubmed:abstractText |
In frog sartorius muscles immersed for 2 hours at 26 degrees C in normal Ringer solution, the intrafiber potassium concentration, C(K)(in millimoles per liter), was 123 +/- 2 (mean value plus or minus standard error), and the potassium activity, a(K) (in millimoles per liter), was 90 +/- 1.0. The corresponding sodium concentration and activity were 20 +/- 1 and 6.5 +/- 0.4, respectively. After overnight immersion in K+-free Ringer solution the values were: CK, 97 +/- 2; aK, 81.5 +/- 1.6; CNa, 47 +/- 2; and aNa, 11.2 +/- 0.6. The changes in aK and aNa during storage were not consistent with an exchange between predominantly "free" fiber K+ and external Na+. These results suggest that the Na+ taken up during overnight immersion largely replaced adsorbed or sequestered K+ in the fibers.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
|
pubmed:chemical | |
pubmed:status |
MEDLINE
|
pubmed:month |
Jan
|
pubmed:issn |
0036-8075
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pubmed:author | |
pubmed:issnType |
Print
|
pubmed:day |
29
|
pubmed:volume |
171
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
|
pubmed:pagination |
413-5
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pubmed:dateRevised |
2007-8-17
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pubmed:meshHeading |
pubmed-meshheading:5538939-Animals,
pubmed-meshheading:5538939-Anura,
pubmed-meshheading:5538939-Biological Transport, Active,
pubmed-meshheading:5538939-Electrodes,
pubmed-meshheading:5538939-Isotonic Solutions,
pubmed-meshheading:5538939-Membrane Potentials,
pubmed-meshheading:5538939-Muscles,
pubmed-meshheading:5538939-Potassium,
pubmed-meshheading:5538939-Sodium,
pubmed-meshheading:5538939-Water
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pubmed:year |
1971
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pubmed:articleTitle |
Sodium and potassium activities in normal and "sodium-rich" frog skeletal muscle.
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pubmed:publicationType |
Journal Article,
In Vitro
|