24153
In vitro skin diffusion studies show that the optimized formulation improves the permeation of FITC - BSA through skin with an enhancement ratio of 4 . 2 compared to a neat control solution .
 Chemical: FITC
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: FITC