20991
Interactions with bacterial lipopolysaccharide ( LPS ) , both in aqueous solution and in lipid membranes , were investigated for a series of amphiphilic peptides derived from the C - terminal region of human thrombin , using ellipsometry , dual polarization interferometry , fluorescence spectroscopy , circular dichroism ( CD ) , dynamic light scattering , and z - potential measurements .
 Chemical: C
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: C