4455
With trypan blue - exclusion assay , we observed that glucosamine ( 10 , 20 , 50 mM ) caused a decrease in cell number at 24 and 48 h ; with a flow cytometric analysis , we also noted an enhanced cell accumulation within the G ( 0 ) / G ( 1 ) phase at 24 h and induction of late apoptosis at 24 and 48 h by glucosamine ( 10 , 20 , 50 mM ) in A549 cells and HBECs .
 Chemical: trypan blue; Chemical: glucosamine; Chemical: glucosamine
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: trypan blue; Chemical: glucosamine; Chemical: glucosamine