8501
Long Evans dams were fed chow with or without added Pb acetate ( 0 , 150 , 375 , 750 ppm ) prior to breeding and remained on the same diet through weaning ( perinatal exposure group ) .
 Chemical: Pb acetate
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: Pb acetate