11980
Finally , profiling of a gcn4Delta mutant uncovered an alternative induction pathway operating at many Gcn4p target genes in histidine - starved cells .
 GENE: gcn4Delta mutant; GENE: Gcn4p target genes
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: gcn4Delta mutant, Gcn4p target genes 
Answer:
 GENE: gcn4Delta mutant; GENE: Gcn4p target genes