28960
In this work we used RcLPS ( consisting of lipid A plus the first seven sugars of the core polysaccharide ) from a rough strain of E . coli to form stable monolayers of LPS at the air - liquid interface .
 Chemical: lipid A; Chemical: sugars
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: lipid A; Chemical: sugars