8013
These results support the hypothesis that soluble factors released by rat lymphocytes modulate the immune response of the mother and participate in the mechanism that protects the fetus against antipaternal antibodies .
 protein: soluble factors; cell type: rat lymphocytes; protein: antipaternal antibodies
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
 Entities: soluble factors, rat lymphocytes, antipaternal antibodies 
Answer:
 protein: soluble factors; cell type: rat lymphocytes; protein: antipaternal antibodies