2323
Two anti-MHC class II Ab , L227 and 2.06 , inhibited the growth of B104 cells , although 2.06 , but not L227 , needed to be further cross-linked with a goat anti-mouse IgG Ab ( GAM ) to show the effect.
 ( protein: L227, None) , ( protein: anti-MHC class II Ab, None) , ( protein: L227, None) , ( protein: 2.06, None) , ( protein: goat anti-mouse IgG Ab, None) , ( cell line: B104 cells, None) , ( protein: 2.06, None) , ( protein: GAM, None) 
Locate the role in the text that participated in the event based on the event type and return it in the event list. 
 Option: Event type: RNA,cell type,protein,cell line,DNA, Arguments type: . 
Text: {0} 
Answer:
 ( protein: L227, None) , ( protein: anti-MHC class II Ab, None) , ( protein: L227, None) , ( protein: 2.06, None) , ( protein: goat anti-mouse IgG Ab, None) , ( cell line: B104 cells, None) , ( protein: 2.06, None) , ( protein: GAM, None) 