11175
In this report, we demonstrate that the T cell tropic strain of HIV , LAI , does not replicate in naive CD4 T cells stimulated by cross-linking CD3 and CD28 .
 cell type: naive CD4 T cells; protein: CD28; protein: CD3
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: naive CD4 T cells, CD28, CD3 
Answer:
 cell type: naive CD4 T cells; protein: CD28; protein: CD3