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The Pt ( 48 ) Pd ( 52 ) - Fe ( 3 ) O ( 4 ) / TMB kit is even more active than the natural enzyme for H ( 2 ) O ( 2 ) detection with a detection limit reaching 2 mu M , and is successfully used to quantitatively monitor the extracellular H ( 2 ) O ( 2 ) generated by neutrophils .
 Pt ( 48 ) Pd ( 52 ) - Fe ( 3 ) O ( 4 ), TMB, H ( 2 ) O ( 2 ), H ( 2 ) O ( 2 )
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 Pt ( 48 ) Pd ( 52 ) - Fe ( 3 ) O ( 4 ), TMB, H ( 2 ) O ( 2 ), H ( 2 ) O ( 2 )