2581
Histologic parameters ( primary and secondary bone trabecula , neovascularization , and bone marrow and connective tissue formation ) were compared between 4 - and 16 - week groups . More rapid decrease in defect size was observed in groups 3 and 4 than in groups 1 and 2 , both in the 4th and 16th weeks .
 Anatomy: bone trabecula; Anatomy: bone marrow; Anatomy: connective tissue
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: bone trabecula; Anatomy: bone marrow; Anatomy: connective tissue