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Probing structural changes in single enveloped virus particles using nano-infrared spectroscopic imaging

Fig 4

Nano-FTIR spectra of influenza virus particles from three different samples at neutral pH (a) and spectra from virus particles taken on day 1 and day 7 (b). Topography, near-field amplitude (A3) and phase (φ3) images of two influenza virus particles on day 1 and day 7 (c). Scale bar 100 nm.

Fig 4