13439
Stimulation of resting human T cells with the CD28 -specific mAb BW 828 induces proliferation and cytokine synthesis without further requirement for TCR coengagement .
 protein: CD28; protein: CD28 -specific mAb BW 828; cell type: resting human T cells; protein: TCR; protein: cytokine
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: CD28, CD28 -specific mAb BW 828, resting human T cells, TCR, cytokine 
Answer:
 protein: CD28; protein: CD28 -specific mAb BW 828; cell type: resting human T cells; protein: TCR; protein: cytokine