Fluorescent location of lung tumour cells

Cells were collected on glass slides by touching tumour surfaces (A) and no rmal regions (B) of the lung. The slides were stained with a nuclear stain and a fluorescent probe for a tumour associated cell surface protein. The ( B) slides from the normal regions lacked fluorescent epithelial cells. The tumour slides (A) contained typical tumour cells and dyskaryotic cells whic h exhibited cell surface fluorescence.