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Furthermore , antibodies to DNA show localized binding to these microstructures , which also react positively with DNA intercalating stains propidium iodide ( PI ) and 4 ' , 6 ' - diamidino - 2 - phenylindole dihydrochloride ( DAPI ) .
 Chemical: propidium iodide; Chemical: 4 ' , 6 ' - diamidino - 2 - phenylindole dihydrochloride; Chemical: DAPI
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: propidium iodide; Chemical: 4 ' , 6 ' - diamidino - 2 - phenylindole dihydrochloride; Chemical: DAPI