18992
Knockdown of NADPH oxidase , NOX5 - S , a variant lacking calcium - binding domains , by NOX5 siRNA significantly inhibited acid - induced increase in mPGES1 expression , thymidine incorporation , and PGE2 production .
 Chemical: NADPH; Chemical: calcium; Chemical: thymidine; Chemical: PGE2
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: NADPH, calcium, thymidine, PGE2 
Answer:
 Chemical: NADPH; Chemical: calcium; Chemical: thymidine; Chemical: PGE2