4892
Results for Experiment 1 showed no significant differences among treatment and control groups for ATP and lactate contents , R values , or sarcomere lengths ; however , significantly lower pH and higher shear values were observed for control birds .
 sarcomere
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Anatomy 
Text: {0} 
Answer:
 sarcomere