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In a gntR deletion mutant , the expression of a chromosomal gntT : : lacZ fusion is both high and constitutive , confirming that GntR is the negative regulator of gntT .
 GENE: gntR deletion mutant; GENE: gntT; GENE: lacZ; GENE: GntR; GENE: gntT
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
 GENE: gntR deletion mutant; GENE: gntT; GENE: lacZ; GENE: GntR; GENE: gntT