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Circular dichroic spectrum of poly(A) helix (solid line) treated with (a) berberine (dashed line), (b) palmatine (dashed line), (c) coralyne (dashed line), and (d) sanguinarine (dashed line) at alkaloid/poly(A) molar ratio at saturation in each case. Partially reprinted from Nandi et al. [76], Giri et al. [77], Giri and Kumar [78], and Giri and Kumar [79] with permission from Elsevier.
