Abstract
Cultured cancer cells (HeLa cell) and MH-134 tumor implanted to mouse were irradiated by LED (center wavelength: 635nm) after HpD treatment. Irradiation power density of a LED was 20 u/cm2.
Three hours irradiation caused cell damage in HeLa cell and 72 hours irradiation caused the tumor necrosis so far sa a depth of 2.5mm.
Though there still remain some unclear points about LEDs interaction with HpD, this experimental data will provide useful dues for future research of PDT without using the laser light
