DR KARI LOUNATMAA / SCIENCE PHOTO LIBRARY DR KARI LOUNATMAA / SCIENCE PHOTO LIBRARY
Neisseria meningitidis. Coloured Transmission electron micrograph of the bacteria Neisseria meningitidis, the agent which causes meningitis. These are non-motile, Gram-negative coccus (spherical) bacteria. At lower frame a cell has undergone a double cell division, producing 4 bacterial cells. Neisseria meningitidis is an obligate human parasite. It causes meningococcal (cerebrospinal) meningitis, the inflammation of connective tissue membranes lining the brain & spinal cord. Symptoms include headache, fever, muscle rigidity, delirium, sometimes death. Treatment with antibiotics. Magnification: x40,500 at 6x7cm size.
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