4283
In 10 control sheep mean plasma TXB2 concentration increased from 0 . 39 ng / ml prebypass to about 1 . 1 ng / ml at 8 and 16 min of bypass .
 None
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 None