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The protein expressed in insect cells was used to test for the presence of specific antibodies in sera from normal, healthy carriers and from patients with various diseases.
 protein: specific antibodies; cell type: insect cells
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: specific antibodies, insect cells 
Answer:
 protein: specific antibodies; cell type: insect cells