12054
The lymphocytic ionotropic purinergic P2X receptors ( P2X1R - P2X7R , or P2XRs ) sense ATP released during cell damage - activation , thus regulating T - cell activation .
 Chemical: ATP
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: ATP 
Answer:
 Chemical: ATP