Lung cancer cells dividing, SEM


Lung cancer cell, coloured scanning electron micrograph (SEM). Lung cancer occurs when abnormal cells divide in a chaotic and uncontrolled manner resulting in the formation of a tumour in the lungs. It is more commonly found in older people and one of the most common factors associated with lung cancer is smoking. Other causes or risks associated with lung cancer are exposure to chemicals or pollutants or a family history of lung cancer. There are a number of treatments available for lung cancer depending on what type of lung cancer it is and the stage it is at. These may include surgery, chemotherapy and radiotherapy, immunotherapy and targeted cancer drugs. In this image the cells are undergoing cytokinesis which is the physical process of cell division which divides the parental cell into two daughter cells. At the end of cytokinesis, the two daughter cells remain connected by the midbody for a short time. The midbody is organised by a set of microtubules and its main function is to localise the site of natural detachment (abscission) between the two daughter cells. The structure that accomplishes cytokinesis is the contractile ring which is a dynamic assembly composed of actin and myosin filaments and structural and regulatory proteins. The ring assembles just beneath the plasma membrane and contracts to constrict the cell into two. Magnification: x6000 when printed at 10cm wide.


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Photo credit: © ANNE E. WESTON/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

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