7481
This is the first work to develop an amino acid - based zwitterionic polymer as an antifouling material , demonstrating that pSerMA is a promising alternative to the traditional ethylene glycol - based antifouling materials .
 Chemical: amino acid; Chemical: pSerMA; Chemical: ethylene glycol
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: amino acid; Chemical: pSerMA; Chemical: ethylene glycol