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Compound 1 showed significant suppressive activity against phytohemagglutinin - activated T - cell proliferation with an IC ( 50 ) of 1 . 83 micro g mL ( - 1 ) , IL - 2 suppressive activity with an IC ( 50 ) of 19 . 0 micro g mL ( - 1 ) and oxidative burst suppressive activity with an IC ( 50 ) of 1 . 6 micro g mL ( - 1 ) and ignorable cytotoxic effect on the CC - 1 rat hepatocyte and 3T3 - L1 mouse fibroblast cell - lines .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
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