8298
On the morphological scale , Gram - negative E . coli cells exposed to CPE and OPE compounds in the dark show damage to the cell envelope , plasma membrane , and in some cases the cytoplasm , while with UV - irradiation , E . coli sustained catastrophic damages to both the cell envelope and cytoplasm .
 Chemical: OPE
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: OPE