18456
Both poly ( sulfobetaine methacrylate ) ( pSBMA ) and poly ( carboxybetaine methacrylate ) ( pCBMA ) have been studied as matrices for the embedding of silver .
 Chemical: poly ( sulfobetaine methacrylate ); Chemical: pSBMA; Chemical: poly ( carboxybetaine methacrylate ); Chemical: pCBMA; Chemical: silver
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: poly ( sulfobetaine methacrylate ); Chemical: pSBMA; Chemical: poly ( carboxybetaine methacrylate ); Chemical: pCBMA; Chemical: silver