11100
However, the major problem still remains the high incidence of leukemic relapse following autologous PBSCT , which may be caused by the reinfusion of PBSC contaminated by leukemic cells .
 cell type: leukemic cells; cell type: PBSC
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: leukemic cells, PBSC 
Answer:
 cell type: leukemic cells; cell type: PBSC