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51.2 MB (51.0 MB compressed)
4974 x 3600 pixels
42.2 x 30.5 cm ⏐ 16.6 x 12.0 in (300dpi)
CNRI / SCIENCE PHOTO LIBRARY CNRI / SCIENCE PHOTO LIBRARY
False-colour transmission electron micrograph (TEM) of Neisseria gonorrhoeae (the gonococcus) the species of bacteria causing sexually- transmitted disease gonorrhoea. Individual bacterium are Gram- negative, non-motile, kidney- shaped & are typically found in pairs (centre). Infection occurs through genital mucous membranes of either sex: symptoms include pain on passing urine, a discharge of pus from penis (men) & vagina (women - some women experience no initial symptmoms). If untreated, infection spreads & may cause sterility (women): severe inflammation of urethra (men) may prevent passage of urine. Magnification: X 22,000 at 35mm size.
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