8858
Atmospheric benzene , urinary muconic acid ( tt - MA ) and leukocyte alkaline phosphatase activity ( LAPA ) were evaluated among 66 car mechanics , 34 road tanker drivers , and 28 nonexposed workers .
 leukocyte alkaline phosphatase
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 leukocyte alkaline phosphatase