2871
In most cell lines, proteins of molecular weight 49 and 44 kDa were found, however two myeloid cell lines expressed only lower molecular weight species of 24 and 22 kDa .
 protein: molecular weight species of 24 and 22 kDa; protein: molecular weight 49 and 44 kDa
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: molecular weight species of 24 and 22 kDa, molecular weight 49 and 44 kDa 
Answer:
 protein: molecular weight species of 24 and 22 kDa; protein: molecular weight 49 and 44 kDa