3475
Heat stability was found to be markedly decreased ( 8 % of residual activity after 20 min of incubation at 46 degrees C ) and a particular characteristic of this enzyme was a biphasic pH curve with a greatly increased activity at low pH .
 None
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Disease 
Text: {0} 
 Entities:  
Answer:
 None