14586
We modified the nanopore surface with ionizable functional groups , by forming a monolayer of L - cysteine or by surface - initiated polymerization of methacrylic acid .
 Chemical: L - cysteine; Chemical: methacrylic acid
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: L - cysteine; Chemical: methacrylic acid