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TEM images of CA-PEI micelles. CA-PEI 3:1 (a, b), CA-PEI 1:1 (c, d), CA-PEI 4:1 (e, f), CA-PEI 1:2 (g, h), and CA-PEI 1:4 (i, j). Black scale bars represent 100 nm, and white scale bars represent 50 nm. The magnification of the images were × 160,000 (a, c), ×135,000 (e, h, j), ×105,000 (b, d, i), and × 87,000 (f, g).
