3809
OBJECTIVES : Strategies to inhibit the VEGF pathway , including antibodies to VEGF , antibodies to the extracellular domain of VEGFR - 1 or VEGFR - 2 , decoy receptors for VEGF and tyrosine kinase inhibitors of VEGFRs , are summarized .
 extracellular
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Anatomy 
Text: {0} 
Answer:
 extracellular