3798
The level of expression of the PDE protein was monitored by immunoblot analysis using two specific cAMP - PDE polyclonal antibodies and by measuring the PDE activity .
 GENE: PDE protein; GENE: cAMP - PDE polyclonal antibodies; GENE: PDE
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: PDE protein; GENE: cAMP - PDE polyclonal antibodies; GENE: PDE