Images Dated 28th February 2003
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Featured 28 Feb 2003 Print
Malaria in the body
Malaria in body. Computer illustration of the passage of malaria through the human body. Malaria is a tropical disease caused by Plasmodium sp. protozoa. They enter the blood after a bite (upper left) from an infected Anopheles sp. mosquito, and travel (red arrows) through the blood to the liver (brown, lower centre). Here they multiply and invade red blood cells, causing the cells to swell and burst. The lack of red blood cells leads to anaemia, and the presence of Plasmodia in the blood causes a fever. Some Plasmodia invade more red blood cells, and others are taken up by other mosquitoes (upper right), continuing the cycle
© CLAUS LUNAU/SCIENCE PHOTO LIBRARY
Featured 28 Feb 2003 Print
Ventricles of brain, MRI
Ventricles of brain. Coloured composite 3-Dmagnetic resonance imaging (MRI) scan of a humanbrain, showing the ventricles (yellow). The frontof the brain is at top. These four cavitiescirculate the cushioning cerebrospinal fluid(CSF). The two large lateral ventricles lie eitherside of the mid-line of the brain, one in eachcerebral hemisphere. They communicate with thethird ventricle (centre), which lies between andbelow them. This leads to the fourth ventricle(small body, lower centre) via a narrow channel(vertical line), the cerebral aqueduct. Beneaththe lateral ventricles lie the sensory-processingthalami (pink, centre)
© Zephyr/Science Photo Library
