8561
Infectious mutant virus progeny was obtained only on complementing gK - expressing cells , suggesting that gK has an important function in the replication cycle .
 GENE: gK; GENE: gK
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: gK, gK 
Answer:
 GENE: gK; GENE: gK