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The tubal ostium is the point where the tubal canal meets the peritoneal cavity , while the uterine opening of the Fallopian tube is the entrance into the uterine cavity , the utero-tubal junction .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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