6
Intravenous administration ( 25 mg / kg ) of carbonic anhydrase inhibitors ( acetazolamide , methazolamide , dichlorphenamide , sulthiame ) induced an early important rise of cortical p O2 , which is not dependent on increase of p O2 and p CO2 and decrease of pH in arterial blood .
 GENE: carbonic anhydrase
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
 Entities: carbonic anhydrase 
Answer:
 GENE: carbonic anhydrase