Samples containing Hb were analyzed via UV-visible spectroscopy and compared to the UV-visible spectra of pure species of Hb bound to various ligands through spectral deconvolution. The open-source Python package Alchromy (www.alchromy.com) was used to interpret and analyze spectra, and leveraged a nonlinear least squares fitting function of the SciPy package to determine the fraction of various liganded forms of Hb that contribute to the final spectra of the Hb mixture [22].
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