23370
In light of recent evidence that PCBs cause developmental neurotoxicity via RyR - dependent mechanisms , this suggests that enantioselective PCB metabolism may influence the developmental neurotoxicity of chiral PCBs .
 Chemical: PCBs; Chemical: PCB; Chemical: PCBs
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: PCBs; Chemical: PCB; Chemical: PCBs