19973
In the present study , Balb / c mice were intraperitoneally injected with microcystin - LR ( MC - LR ) at the doses of 0 . 5 , 2 and 8 mu g / kg body weight ( bw ) every 48h for 30d .
 Chemical: microcystin - LR; Chemical: MC - LR
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: microcystin - LR; Chemical: MC - LR