16378
Groups of 5 male and female CD rats were dosed with P2NA ( 2 - 550 mg / kg b . w . ) and 2NA ( 0 . 075 - 75 mg / kg b . w . ) ; 2NA - haemoglobin adducts and urinary 2NA excretion were determined applying GC - MS / MS .
 Chemical: P2NA; Chemical: 2NA; Chemical: 2NA; Chemical: 2NA
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: P2NA; Chemical: 2NA; Chemical: 2NA; Chemical: 2NA