9414
However , the authors did detect significant effects of BDE - 99 treatment on adult phenotype of in ovo - exposed birds by breeding observations , in which clutch size was significantly smaller in all PBDE - dosed birds ( low , medium , and high ) compared with controls .
 BDE - 99, PBDE
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 BDE - 99, PBDE