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It contains approximately 60 hair cells ( measured in Rana catesbeiana ) , from which the stereovilli protrude into the lumen and connect to the tectorial membrane ( Frishkopf and Flock 1974 ) .
 Anatomy: hair cells; Anatomy: stereovilli; Anatomy: lumen; Anatomy: tectorial membrane
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: hair cells; Anatomy: stereovilli; Anatomy: lumen; Anatomy: tectorial membrane