11690
Phosphoinositide 3-kinase ( PI 3-kinase ) is activated by a diverse set of receptors that determine T-cell function , including the T-cell antigen receptor ( TCR ), the costimulatory receptor CD28 , and negative regulators of T-cell activation such as CTLA-4 .
 protein: CTLA-4; protein: TCR; protein: negative regulators; protein: Phosphoinositide 3-kinase; protein: T-cell antigen receptor; protein: PI 3-kinase; protein: costimulatory receptor CD28
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: CTLA-4, TCR, negative regulators, Phosphoinositide 3-kinase, T-cell antigen receptor, PI 3-kinase, costimulatory receptor CD28 
Answer:
 protein: CTLA-4; protein: TCR; protein: negative regulators; protein: Phosphoinositide 3-kinase; protein: T-cell antigen receptor; protein: PI 3-kinase; protein: costimulatory receptor CD28