11878
Rapid Ca2+-mediated activation of Rap1 in human platelets .
 cell type: human platelets; protein: Rap1
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: human platelets, Rap1 
Answer:
 cell type: human platelets; protein: Rap1