22674
In this study , we investigated the effects of polychlorinated biphenyls ( PCBs ) and organochlorinated pesticides on the serum levels of luteinising hormone ( LH ) , follicle stimulating hormone ( FSH ) and weights and histomorphometry of uterine tissue in immature female rats using uterotrophic assay .
 polychlorinated biphenyls, PCBs, organochlorinated
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 polychlorinated biphenyls, PCBs, organochlorinated