4578
Bilayer lipid membranes ( BLMs ) are prepared in the device upon spontaneous and instantaneous thinning of the lipid solution in a 100 - mu m dry - etched aperture in a 12 . 5 - mu m thick Teflon foil .
 Chemical: Teflon
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: Teflon