9083
In order to identify plant compounds able to interfere in the VEGFs / VEGFR - 1 ( Flt - 1 ) recognition by VEGF family members , the extracts of the aerial parts of Campsiandra guayanensis and Feretia apodanthera were screened by a competitive ELISA - based assay .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
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