7229
Additionally , we show that S1P ( 1 ) antagonism reverses experimental autoimmune encephalomyelitis in mice without acting on S1P ( 1 ) expressed within the central nervous system , demonstrating that lymphocyte sequestration via S1P ( 1 ) antagonism is sufficient to alleviate autoimmune pathology .
 None
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities:  
Answer:
 None