27861
Induction of C - X - C Chemokine Receptor Type 7 ( CXCR7 ) Switches Stromal Cell - Derived Factor - 1 ( SDF - 1 ) Signaling and Phagocytic Activity in Macrophages Linked to Atherosclerosis .
 None
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:  
Answer:
 None