21271
Saturated palmitic and stearic acids increased ceramides , up - regulated PTP1B , and had AKt and PTP1B phosphorylation at Ser 50 impaired .
 Chemical: palmitic and stearic acids; Chemical: ceramides; Chemical: Ser
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: palmitic and stearic acids, ceramides, Ser 
Answer:
 Chemical: palmitic and stearic acids; Chemical: ceramides; Chemical: Ser