6777
The lacS gene was cloned in an E . coli - Streptococcus shuttle vector and was expressed both in a lacS deletion derivative of S . thermophilus and in a pNZ63 - cured strain , L . lactis NZ6091 .
 GENE: lacS gene; GENE: lacS
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: lacS gene, lacS 
Answer:
 GENE: lacS gene; GENE: lacS