after sensitization with the intravenous hematoporphyrin derivative ( hpd ) or its more purified form of dihematoporphyrin ether ( dhe ) , 630 nm of light from a tunable sensitizer argon light system was delivered to the tumor site through the biopsy channel of a flexible bronchoscope .
C0121300
hematoporphyrin derivative
C0058031
dihematoporphyrin ether