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A sheep testicular cDNA library constructed in pcDNA1 vector was screened with a probe generated by polymerase chain reaction ( PCR ) and corresponding to a 1 . 6 kb fragment of the rat luteinizing hormone receptor cDNA .
 GENE: rat luteinizing hormone receptor 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: rat luteinizing hormone receptor cDNA