1583
Associations between HLA class II antigens and autoantibodies to the ribonucleoproteins Ro(SSA) and La(SSB) have been reported in these patients.
 protein: ribonucleoproteins; protein: Ro(SSA); protein: autoantibodies; protein: HLA class II antigens; protein: La(SSB)
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 protein: ribonucleoproteins; protein: Ro(SSA); protein: autoantibodies; protein: HLA class II antigens; protein: La(SSB)