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Only a few cells showed viral capsid antigen ( VCA ).
 protein: VCA; protein: viral capsid antigen
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: VCA, viral capsid antigen 
Answer:
 protein: VCA; protein: viral capsid antigen