3860
The probands twin as well as another sister also had extremely low levels of hemolytic C5 ( approximately 0 . 5 per cent normal ) , but both these subjects have been healthy .
 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