27714
Blood protein adsorption and blood platelet adhesion onto surface - attached poly ( alkylacrylamide ) networks that exhibit small and systematic variations in chemical composition are investigated .
 poly ( alkylacrylamide )
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 poly ( alkylacrylamide )