12863
Exposure to organochlorinated pesticides such as dieldrin has been linked to Parkinson ' s and Alzheimer ' s diseases , endocrine disruption , and cancer , but the cellular and molecular mechanisms of toxicity behind these effects remain largely unknown .
 Chemical: dieldrin
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: dieldrin