14346
A new approach to facilitate immobilization and affinity purification of recombinant proteins and selected human B lymphocytes has been developed.
 protein: recombinant proteins; cell type: human B lymphocytes
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: recombinant proteins, human B lymphocytes 
Answer:
 protein: recombinant proteins; cell type: human B lymphocytes