1033
The PSD2 gene was heterologously expressed by infection of Sf - 9 insect cells with recombinant baculovirus , resulting in a 10 - fold increase in PSD activity .
 GENE: PSD2 gene; GENE: PSD
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: PSD2 gene; GENE: PSD