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As pregnancy advanced the complexity of the vasculature increased : at 4 weeks the surface showed a pattern of ridges separated by troughs .
 Anatomy: vasculature; Anatomy: surface
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: vasculature; Anatomy: surface