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Notably, compound 1d exhibited the most potent activity against Escherichia coli and Staphylococcus aureus with MIC ranges of 31.3125.0 g/mL and against Pseudomonas aeruginosa with MIC ranges of 375.0500.0 g/mL
The slight acidity of the solution (pH approximately 3.04.0 at 0.1% concentration) protonates basic amino acid residues on poorly water-soluble peptides, increasing their net positive charge and improving electrostatic interaction with the surrounding aqueous solvent a mechanism that dramatically increases the solubility of many lyophilised peptide preparations that resist dissolution in neutral or alkaline aqueous conditions
Its unlikely origin
It may occur spontaneously or be treatment-associated and consists of a proliferative collection of hepatocytes spanning several lobules and without evidence of prior hepatic damage
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