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Large amounts of cytosolic NADH were oxidized by the mitochondrial respiratory chain via the NADH shuttle , comprising anywhere from about 20 to 80 % of the total flow of reducing equivalents to oxygen in these tumors .
 cytosolic, mitochondrial, tumors
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Anatomy 
Text: {0} 
Answer:
 cytosolic, mitochondrial, tumors