24819
To evaluate the cytokine balance and enzymatic alterations induced by environmental pesticide exposure during pregnancy , this transversal study explored placentas derived from non - exposed women ( control group - CG ) , and from women living in a rural area ( rural group - RG ) , collected during intensive organophosphate ( OP ) pesticide spraying season ( RG - SS ) and during non - spraying season ( RG - NSS ) .
 Chemical: organophosphate
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: organophosphate