11279
For an efficient folate - targeted delivery , while the interaction between the folate on the carriers and the folate receptor ( FR ) on the cells is necessary , the recovering and recycling of FR to maintain a high density level of FR on the cellular membrane is also important .
 Chemical: folate; Chemical: folate; Chemical: folate
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: folate; Chemical: folate; Chemical: folate