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The bovine PGHS - 2 cDNA was cloned by a combination of reverse transcription - polymerase chain reaction and cDNA library screening .
 GENE: bovine PGHS - 2 cDNA
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: bovine PGHS - 2 cDNA