11759
Reverse transcriptase - polymerase chain reaction assays showed that PKRDeltaE7 is expressed in a broad range of human tissues at variable levels .
 Reverse transcriptase, PKRDeltaE7
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 Reverse transcriptase, PKRDeltaE7