16381
Since haemoglobin adducts are formed by the same pathway ( N - hydroxylation ) as the ultimate carcinogens from 2NA , the comparison of adduct concentrations after 2NA and P2NA dosage permits a quantitative estimate of the carcinogenicity of P2NA .
 Chemical: N; Chemical: 2NA; Chemical: 2NA; Chemical: P2NA; Chemical: P2NA
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: N; Chemical: 2NA; Chemical: 2NA; Chemical: P2NA; Chemical: P2NA