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Figure 15: Cumulative HET-CAM scores of controls and test formulations. Values are expressed as mean ± standard deviation, . Abbreviations: HET-CAM, hen’s egg test chorioallantoic membrane, NaCl, sodium chloride; SDS, sodium dodecyl sulphate; CaCl2, calcium chloride; DRZ, dorzolamide hydrochloride; OCM-CS, 6-O-carboxymethyl chitosan; OCM-CSNPs, 6-O-carboxymethyl chitosan nanoparticles; CSNPs, chitosan nanoparticles.