JOHN BURBIDGE / SCIENCE PHOTO LIBRARY JOHN BURBIDGE / SCIENCE PHOTO LIBRARY
Liver cancer. Light micrograph of a section through a primary carcinoma from a human liver. Healthy liver cells are normally arranged in roughly hexagonal structures called lobules, which are separated by thin bands of connective tissue. In this cancerous liver, the lobules (e.g. large oval, upper centre) are disintegrating, and abnor- mal fibrous tissue has proliferated around them. Primary carcinomas are malignant tumours that dev- elop from epithelial (lining) cells. They can spread cancer cells around the body, causing secondary tumours. Most primary liver carcinomas arise in the cells lining the bile duct (cholan- giocarcinoma). Magnification: x20 at 6x7 cm size.
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