7335
In an adapted version of the H295R steroidogenesis assay , using gas chromatography - tandem mass spectrometry analysis of H295R media , all five compounds increased levels of 17 beta - estradiol and estrone .
 17 beta - estradiol, estrone
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 17 beta - estradiol, estrone