1391
In particular , lacZ transcripts synthesised this way are highly unstable and yield little beta - galactosidase .
 GENE: lacZ transcripts; GENE: beta - galactosidase
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: lacZ transcripts; GENE: beta - galactosidase