Fig. 2. Effect of negatively charged Creighton (CR) AgNPs (AgNPs^-) and oxidation on coloration of HRBCs. Tube 1: Flux media + RBCs (CONT); Tube 2: AgNPs + flux media + RBCs (NPS); Tube 3: Flux media + NPS (NPSC); Tube 4: Hydrogen peroxide in flux media + RBCs (H₂O₂).