tokens: 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 .
folded_tokens: atmospheric benzene , urinary muconic acid ( tt-ma ) and leukocyte alkaline phosphatase activity ( lapa ) be evaluate among 66 car mechanic , 34 road tanker driver , and 28 nonexposed worker .