
Keywords: AChE, acetyl choline esterase; AFM, atomic force microscopy; AgNP, silver nanoparticles; APS, aminopropyl triethylene silane; ATP, 4-aminothiphenol; AuNP, gold nanoparticles; BSA, bovine serum albumin; CBU, cyclic bisureas; chit, chitosan; ChlsOx, cholest