6549
We observed that when ATDC5 cells were cultured on functional peptide nanofibers , they rapidly aggregated in insulin - free medium and formed cartilage - like nodules and deposited sulfated glycosaminoglycans shown by Safranin - O staining .
 Chemical: Safranin - O
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: Safranin - O