343
The structures were elucidated based on ( 13 ) C - and ( 1 ) H - NMR as well as 2D - NMR , IR and different MS spectra and the immunomodulation activity for compound 1 was evaluated through lymphocyte proliferation assay , IL - 2 assay , oxidative burst of phagocytic leukocytes and through their cytotoxicity on two cell lines .
 Chemical: ( 13 ) C; Chemical: ( 1 ) H
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: ( 13 ) C; Chemical: ( 1 ) H