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Release of intracellular components of E. coli suspensions treated with (A) G3.5-PAMAM-COOH, (B) G4-PAMAM-OH and (C) G4-PAMAM-NH2. Four samples were evaluated in each group. The increase in the absorbance is an indicator of the compromised cell integrity resulting in leaching of the nuclear components which are absorbed at 260nm.
