3111
20 - Hydroxyeicosatetraenoic acid ( 20 - HETE ) is formed by the omega - hydroxylation of arachidonic acid by cytochrome P450 4A and 4F enzymes , and it induces angiogenic responses in vivo .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Anatomy 
Text: {0} 
Answer:
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