8378
The K ( m ) values are 0 . 25 +/- 0 . 08 and 46 . 6 +/- 18 . 5 micro M , and V ( max ) values were 24 . 5 +/- 4 . 4 and 375 +/- 142 pmol / mg protein / min for high - and low - affinity sites , respectively , suggesting the presence of multiple binding sites .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None