13456
Addition of ASA to an in vitro T helper cell differentiation system , at concentrations compatible with plasma levels reached during anti-inflammatory therapy , resulted in reduced development of Th1 cells .
 cell type: Th1 cells
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: Th1 cells 
Answer:
 cell type: Th1 cells