9570
With the biological analysis in an in vitro intracellular permeation and cytotoxicity test , chemical conjugation of the surface using folic acid ( FA ) molecules can provide the nanoparticles with cell - targeting properties , localizing the nanoparticles to folate receptors ( FRs ) on target KB cells that over - express the FRs .
 Chemical: folic acid; 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: folic acid; Chemical: folate