98
The incidence of hepatitis B antigen following transfusion was about 2 . 8 per cent .
 GENE: hepatitis B antigen
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: hepatitis B antigen 
Answer:
 GENE: hepatitis B antigen