Microneedles may help light reach hard-to-treat skin cancers

Photodynamic therapy (PDT) uses a light-sensitive drug and a specific wavelength of light to destroy cancer cells. The treatment has become an important option for certain skin cancers because it can target diseased tissue ...

Viagra may reduce cancer metastasis, study shows

Viagra was originally developed to treat high blood pressure and chest pain caused by reduced blood flow to the heart, but over the past three decades it has become the world's best-known therapy for erectile dysfunction. ...

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