9038
All the tumors exhibited very low proliferative activity, fewer than 10% of the tumor cell nuclei being stained by the antibody MIB-1 ( Ki-67 antigen ).
 protein: Ki-67 antigen; protein: antibody MIB-1; protein: Ki-67
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: Ki-67 antigen, antibody MIB-1, Ki-67 
Answer:
 protein: Ki-67 antigen; protein: antibody MIB-1; protein: Ki-67