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    On the left, a stained adenocarcinoma from the lung. The enlarged section B shows healthy lung tissue, the enlarged section C an adenocarcinoma. Section D shows the PET-CT of a metabolically active central lung tumour, close to the trachea, heart and oesophagus. The irradiation dose distribution is shown in colour: Desired dose 100% in the tumour and 80% in the extended tumour area. 25% and 10% of the irradiation dose (turquoise and blue lines) in the healthy tissue for technical reasons.

    Some lung tumours do not respond to radiation therapy. This effect can be reversed by blocking an enzyme in the tumour cells, as Würzburg researchers report.