1432
In contrast , succimer treatment of rats not previously exposed to Pb produced lasting and pervasive cognitive and affective dysfunction comparable in magnitude to that produced by the higher Pb exposure regimen .
 Chemical: succimer; Chemical: Pb; Disease: cognitive and affective dysfunction; Chemical: Pb
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Chemical: succimer; Chemical: Pb; Disease: cognitive and affective dysfunction; Chemical: Pb