1168
Distribution of melamine in maternal serum was about 30 % higher in late pregnancy than that in early pregnancy ; and it was 2 folds higher in postnatal serum in early infants in young adulthood .
 Chemical: melamine
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: melamine