1856
The effect of a liposomal formulation of methylprednisolone ( MPL ) on the inhibition of lymphocyte proliferation in spleen cells was investigated following IV dosing in rats .
 ( cell type: spleen cells, 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:
 ( cell type: spleen cells, None) 