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A polyclonal antiserum raised against recombinant B4-2 recognizes a 32-34 kDa protein in lymphocytes .
 protein: 32-34 kDa protein; cell type: lymphocytes; DNA: B4-2; protein: recombinant B4-2
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: 32-34 kDa protein; cell type: lymphocytes; DNA: B4-2; protein: recombinant B4-2