Figure 2From: HHT diagnosis by Mid-infrared spectroscopy and artificial neural network analysisSecond derivative spectra of healthy control and all HHT patients. Shown is the mean spectrum of 202 control spectra in green and the mean spectrum of 192 patient spectra in red for spectral regions 3150–2750 cm-1 (A) and 1.850 - 750 cm-1 (B).Back to article page