8129
We found that 17 beta estradiol ( E2 ) up - regulated Cx43 , and enhanced GJIC in osteocyte - like MLO - Y4 cells in fluorescence recovery after photobleaching ( FRAP ) assay .
 Chemical: 17 beta estradiol
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: 17 beta estradiol