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HPLC profiles of linear (L1) and dendrimeric (M1) peptides in serum. (A) L1 in serum at 0 h. (B) L1 after incubation in serum for 2 h; peptide is no longer detectable. (C) M1 in serum at 0 h. (D) M1 after incubation in serum for 24 h; the peptide is still present. The vertical bar indicates peptide retention time. x axis, retention time (min); y axis, absorbance at 220 nm.
