15384
Additional less common polymorphisms in these genes together with polymorphisms in other genes relevant to blood coagulation such as the cytochrome P450 CYP4F2 , gamma - glutamyl carboxylase , calumenin and cytochrome P450 oxidoreductase may also be significant predictors of dose , especially in ethnic groups such as Africans where there have been fewer genetic studies compared with European populations .
 Chemical: gamma - glutamyl
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: gamma - glutamyl