Figure 1.
(A) Absorption coefficients of melanin (black), hemoglobin (red), and water (blue). (B) The NIR device used in the present study emits a spectrum of near-infrared from 1,000 nm to 1,800 nm (bold red), with filtering of wavelengths between 1,400 nm and 1,500 nm (blue belt), which are strongly absorbed by water and hemoglobin. Cited and revised from Figure 1 in Tanaka et al. Non-thermal cytocidal effect of NIR irradiation on cultured cancer cells using specialized device. Cancer Sci. 2010;101:1396–1402.20
Abbreviation: NIR, near-infrared.