BIOPHOTO ASSOCIATES / SCIENCE PHOTO LIBRARY BIOPHOTO ASSOCIATES / SCIENCE PHOTO LIBRARY
Brain tumour. Light micrograph of a section through an astrocytoma brain tumour. This is a benign (non-cancerous) tumour arising from astrocytes, a type of glial (support) cell common in the brain. As the tumour grows it puts pressure on other structures in the brain. This causes a variety of effects depending on the location of the cancer.
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