8221
Primary macrophages treated with lipopolysaccharide ( LPS ) did not produce C16 ceramide , whereas palmitate exposure led to a modest increase in this sphingolipid .
 Chemical: C16 ceramide; Chemical: palmitate; Chemical: sphingolipid
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: C16 ceramide; Chemical: palmitate; Chemical: sphingolipid