28244
Inhibition of the mentioned essential steps of in vitro angiogenesis agrees with the observed inhibition of the in vivo angiogenesis , substantiated by using the chick chorioallatoic membrane assay and confirmed by the murine Matrigel plug , the zebrafish embryo neovascularization and the zebrafish caudal fin regeneration assays .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
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