12364
To directly compare the specificity and efficacy of different Cre lines in mediating adipocyte specific recombination , transgenic Cre lines driven by the adipocyte protein 2 ( aP2 ) and adiponectin ( Adipoq ) gene promoters , as well as a tamoxifen - inducible Cre driven by the aP2 gene promoter ( iaP2 ) , were bred to the Rosa26R ( R26R ) reporter .
 Chemical: tamoxifen
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: tamoxifen