in the present study , the photosensitizing porphyrins hematoporphyrin derivative and dihematoporphyrin ether ( dhe ) , which are known to preferentially affect the cell membrane , were found to significantly inhibit binding of mouse igg2a antibodies to the ligand binding site of fc gamma ri on human peripheral blood monocytes and the u937 human monocytic cell line .
C0121300
hematoporphyrin derivative
C0058031
dihematoporphyrin ether