Polyacrylamide is an acrylate polymer (-CH2CHCONH2-) formed from acrylamide subunits that is readily cross-linked. Acrylamide needs to be handled using good laboratory practices (GLP) to avoid poisoning since it is a neurotoxin. Polyacrylamide is not toxic, but unpolymerized acrylamide can be present in the polymerized acrylamide.