7978
The two mouse lines carrying the unfragmented Hnf3g - lacZ YAC showed tissue - specific , copy number - dependent and position - independent expression , proving that 170 kb of the Hnf3g locus contain all elements important in the regulation of Hnf3g .
 Hnf3g, lacZ, Hnf3g, Hnf3g
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 Hnf3g, lacZ, Hnf3g, Hnf3g