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Placental angiogenesis , which is physiologically normal , may serve as a general model of this process in other circumstances , such as tumor .
 Anatomy: Placental; Anatomy: tumor
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Anatomy 
Text: {0} 
Answer:
 Anatomy: Placental; Anatomy: tumor