1937
H4 cells formed tight , round spheroids whereas H5 cells formed loose , grape - like structures .
 Anatomy: H4 cells; Anatomy: spheroids; Anatomy: H5 cells; Anatomy: grape - like structures
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: H4 cells; Anatomy: spheroids; Anatomy: H5 cells; Anatomy: grape - like structures