4954
Measuring ouabain - sensitive 22Na efflux and using ouabain - sensitive lactate production as a measure of ATP hydrolysis by the Na + K + pump , it was shown that Nonidet P - 40 greatly decreased the efficiency of the Na + K + pump .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Anatomy 
Text: {0} 
Answer:
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