1032
Expression of h6 . 1 in COS - 1 cells led to the production of a typical type IV PDE activity in that cAMP , but not cGMP , served as substrate and its activity was insensitive to either Ca2 + / CaM or cGMP but was inhibited by low concentrations of rolipram . ( ABSTRACT TRUNCATED AT 400 WORDS )
 GENE: type IV PDE; GENE: CaM
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: type IV PDE; GENE: CaM