This invention provides for therapy of tumours susceptible to nectoris when an appropriate compound is administered followed by illumination with light of a wavelength absorbed by the compound, making use of meso-porphyrins of the formula:
  where n = 1 to 3 and each substituent R, the same or different and at the same or different position in its respective substituent phenyl ring or other aromatic group replacing that ring, is an hydroxy, amino or sulphydryl group, by association of said meso-porphyrins with a suitable pharmaceutical diluent or carrier.
                            本发明提供了利用式中的介
卟啉治疗易发生瘤变的肿瘤的方法,即先给药适当的化合物,然后用该化合物吸收的波长的光照射:
  其中n=1至3,每个取代基R(相同或不同且位于其各自取代基苯基环或取代该环的其它芳香基团的相同或不同位置)是羟基、
氨基或巯基,通过将所述介
卟啉与合适的药物稀释剂或载体结合。