Conc. C C A1 A2 A3 A4 A5 A6 A7 A8 Plate A mg/mL Control Control 3.00 1.00 0.70 0.30 0.10 0.07 0.03 0.01 Plate B µg/mL Control Control 7.00 3.00 1.00 0.70 0.30 0.10 0.07 0.03

Table 1: The design of plates A and B and the concentrations used for the toxicity testing of dextran, NIPAM monomer, p(NIPAM), p(NIPAM-co-5% LY) and poly(ethylenimine) (PEI).