J.W. SHULER / SCIENCE PHOTO LIBRARY J.W. SHULER / SCIENCE PHOTO LIBRARY
Cancer cells. Polarised light micrograph of cancerous liver cells. The distribution of DNA (blue), actin (red) and microtubules (green), is shown. The cancer has spread to the liver, a process known as metastasis. Secondary liver cancer is incurable, but life can be prolonged with anti-cancer drugs.
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