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It has also been previously demonstrated that LPS treatment of splenic B cells from athymic mice results in a decrease in steady state mRNA encoding the A alpha class II protein .
 GENE: A alpha class II protein
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
 GENE: A alpha class II protein