13010
Sequence analysis of DD products revealed two cDNAs with identity to known gene products : the catalytic sub-unit of DNA-protein kinase ( DNA-PK(CS) ), and the peroxisomal enzyme 17beta-hydroxysteroid dehydrogenase type IV ( 17beta-HSD IV ).
 peroxisomal enzyme 17beta-hydroxysteroid dehydrogenase type IV, cDNAs, DD products, DNA-PK(CS), DNA-protein kinase, catalytic sub-unit of DNA-protein kinase, known gene products, catalytic sub-unit, 17beta-HSD IV
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 peroxisomal enzyme 17beta-hydroxysteroid dehydrogenase type IV, cDNAs, DD products, DNA-PK(CS), DNA-protein kinase, catalytic sub-unit of DNA-protein kinase, known gene products, catalytic sub-unit, 17beta-HSD IV