25045
These results highlight the potential for observing antitumor activity with MEDI - 575 through modulation of the stromal component of tumors and confirm that the PDGFR alpha pathway can play a role in maintaining a tumor microenvironment conducive to tumor growth .
 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