BSIP, MAY / SCIENCE PHOTO LIBRARY BSIP, MAY / SCIENCE PHOTO LIBRARY
Cysticercosis-affected brain. This disease is caused by the larvae of the pork tapeworm, Taenia solium. Humans are the main primary host of this tapeworm, which infects some 4 million people worldwide, mainly in developing countries. The larvae form cysts in the muscles and brain. These cysticerci are 1 to 2 centimetres in diameter when fully developed. They can cause serious damage to the brain, epilepsy being a common symptom.
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