17995
Ni ( II ) - NTA Modified Poly ( ethylene imine ) Glycopolymers : Physicochemical Properties and First In Vitro Study of Polyplexes Formed with HIV - Derived Peptides .
 Chemical: Ni ( II ) - NTA; Chemical: Poly ( ethylene imine )
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: Ni ( II ) - NTA; Chemical: Poly ( ethylene imine )