3048
Dorsal foot TcpO2 was measured by using oxygen - sensing electrodes with surface temperatures of 42 degrees C and 45 degrees C ; in theory , changes in sympathetic activity should affect vasomotor tone and TcpO2 in skin beneath an electrode at 42 degrees C ( submaximal vasodilation ) , but not at 45 degrees C ( maximal vasodilation ) .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
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