17111
Injectable , in situ - gelling magnetic composite materials have been fabricated by using aldehyde - functionalized dextran to cross - link superparamagnetic nanoparticles surface - functionalized with hydrazide - functionalized poly ( N - isopropylacrylamide ) ( pNIPAM ) .
 Chemical: aldehyde; Chemical: hydrazide; Chemical: poly ( N - isopropylacrylamide ); Chemical: pNIPAM
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: aldehyde; Chemical: hydrazide; Chemical: poly ( N - isopropylacrylamide ); Chemical: pNIPAM